THE HAMMER | Cast Aluminum and Lead from 3D Printed Patterns

I made a cast aluminum and lead hammer using multiple 3D printed molds and patterns. A lead hammer is useful for 'persuading' things where you do not want to leave a mark. You simply recast the head when it needs it.
I think the noir theme came from the narrator's voice in my head every time I said the word 'hammer'... something different!
A huge thank you for the shout-out on the Making It Podcast!
If you have not tuned in yet, check it out!!!
Making It Podcast : Hosted by Jimmy Diresta, Bob Clagett and David Picciuto
makingitpodcast...
(For those who are curious, Oltrogge is pronounced like you would say Ultra-Geek but leave off the 'k'-- :)
www.grunblau.com
Spy Glass Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
creativecommons...

[@mavos1211]

Hey Brian, really missing seeing a true craftsman at work. Please come back soon with some more videos.

[@Farlig69]

Agreed - need more!!!

[@SurferSurfer-ip4rf]

I’m late finding this guy ... He’s a natural !

[@jimmydiresta]

Dam that's a sexy hammer!

[@Grunblau]

+jimmydiresta This guy knows hammers ^^^

[@thiswaytohell2942]

jimmydiresta thats exactly what I said

[@bretthammer8755]

Everyone loves a good hammer haha. 😉

[@gattonpc]

Sexy hammer but kinda useless..

[@JonDingle]

@@gattonpc Not really, sometimes you need a soft headed hammer to prevent damage to an item like a casting such as an aluminium or a cast iron cylinder head. You can get aluminium, copper and plastic hammers for use in different applications.

[@buildmotion1426]

Quality and detail like Clickspring. Your projects are a benchmark to the community. I'm a machinist of 25+ years experience, and wish you worked in my shop!

[@jimmydiresta]

hahah i am wearing head phones editing my blog and i hear my voice!! Mad Love! Amazing lesson as always!

[@Grunblau]

+jimmydiresta I was going to simply leave it as an Easter egg while I was sanding but your voice is too recognizable! :). Thanks!

[@TobiasKornmayer]

xD very funny, had to watch it three times: oltridge, oltrgrgr... great job for the audio visualization btw, how did you do that?

[@Grunblau]

+Tobias Kornmayer After Effects and KZbin. I couldn't tell you exactly how as I followed a tutorial and tweeked a few variables.

[@gavinteague6816]

Brian Oltrogge please finish the dominoes box I've been waiting for more than a year

[@TheGunCollective]

You always make this look so damn easy haha. Fantastic work as always.

[@Grunblau]

+TheGunCollective Thanks!

[@Misterious_xxas3]

Brian Oltrogge dang that's one hell of a hammer . By the way nice video.

[@jaimemunoz5920]

That shows he has great kung fu if he can make it look easy.

[@AlumiTube]

So true, i do alot of casting on my channel too, and some times there will be fails :) Great video Brian

[@Hircine101]

jaime munoz hey I get that reference

[@augustmay444]

Hei Mr. Brian. Come back please. Miss your videos.

[@GhostBrew]

He read this, and liked it, Please return, I have subscribed in hopes he does

[@fatlacesthedon]

At least we know he's alive

[@MindMeetMaker]

Hope you can one day share your creativity with us again, I always stop by your channel in hopes of a unseen project sometimes watch a old one and pretend I havent seen it 🤣

[@NoHandlebars87]

Hey Brian. Any chance we will see more videos anytime soon? I love your channel. It is one of my favorites on youtube.

[@kreterakete]

just thought the same and miss his work.

[@NoHandlebars87]

Almost a year later from this comment and 2 years from this video. :( I genuinely loved this channel

[@Grunblau]

I had a consulting gig that took over my life for the past two years- they were not social media friendly (otherwise I would have had loads of content). I am trying to get the YT gears spinning again.

[@NoHandlebars87]

@@Grunblau Well, I hope to see you post soon! Your channel is one of my favorites and I am floored you are willing to get going on YT again. Thanks and have a good holiday!

[@Davon234able]

@@Grunblau great news!!!!

[@WabiSabE]

amazing process, beautiful result. A true artisan!

[@Grunblau]

+Wabi Sab - E Thank you!

[@gavinteague6816]

Brian Oltrogge please finish dominoes box

[@VerbindingMislukt]

Rip this channel! Come back every few months, hoping for some new uploads. It really was one of my favorite channels. PLEASE RETURN TO US

[@dylansmith7852]

Milan Vaessen same

[@btzemat210]

You have a voice for a unsolved killer documentary. A tv station should hire you for 2020, 60 min, 48 hrs or something.

[@thomas6244]

I love the story-telling and the quality of your video (kuddos for the nice podcast insert) !

[@Grunblau]

+Thomas Desor Thanks! Imagine what it is like when I listened the first time! Wasn't positive he was talking about me until I looked at the show notes, lol...

[@tobhomott]

LoL, who else could Jimmy have meant? I knew it was you he was taking about the moment he started (trying) to say your name!

[@DavidGuyton]

I love this level of precision. Well done sir.

[@JOELTRoss]

Hey Brian, we know things change in our lives, but where did you go? We miss you as a craftsman.

[@bigstackD]

Hell yeah bro 🤘🏻🤪🤘🏻

[@erlinghagendesign]

Hi Brian, try the next the hammer head with pure zine and copper in parts of 97:3. This is non toxic, melts & casts perfectly well without significant shrinking. Looks superb and suits the same purpose as well. Great work. cheers Herri

[@kunlegrant369]

Excellent work Mr oltrogge can wait to see your work again

[@matejsmetka2968]

10 points to the Oltroggor! You, sir, are fricking magician. Love your preciseness and clean work! Keep it up!

[@MensHealth-drizzle-drizzle]

Just found this on Reddit Grunblau December 27 2019 I am still around, still replying to KZbin comments, etc... I had an opportunity to play with robots and to help setup a multi million dollar dream fabrication lab for a wealthy entrepreneur. This ended up taking over my life for two + years. I have missed being a part of the community and I hope to return to KZbin at some point in the near future! Hope you have a Happy New Year!!! Thanks for the update Brian

[@Grunblau]

You bet!

[@AddictedtoProjects]

That has got to be the sexiest lead hammer in the world. If not one of the best looking hammers full stop! I bet Tom from Oxtools would kill for this one! ;)

[@120Livi]

It's quite amazing the number of KZbinrs who invest a lot of time in their channel, making really high quality content only to just one day stop. Maurice Blok, Jeremy Schmidt, Jord's Woodshop to name a few all stopped abruptly. Hope you're OK Brian whatever you're doing ❤️.

[@Grunblau]

Okay, try to imagine... Being 100% committed to a job for 15 years, boss dissolves 2 person award winning architecture firm to become a tennis club owner. Start my own company, teach and continue to do videos on the side. Opportunity comes to develop housing with Habitat for Humanity and possibly teach full time at local university. Suspend my company to pursue. Year later university suspends new hires and lays off all adjuncts. Get a job at a tech company building/running a digital fabrication lab. Work 12-14 hour days, suspend making videos. Zero life/work balance leads to questioning priorities and life choices. End 2 year contract work with tech company. Couple months and a pandemic later, I am typing this response to your comment... Oh, last week I bought a one year subscription to Adobe Creative Desktop, so I guess we’ll see ;)

[@120Livi]

@@Grunblau questioning and resetting priorities is one best things you can do for your own wellbeing. Nobody on their deathbed has ever said "you know what, I wish I'd worked more and enjoyed life less" Stay safe Brian, hope it all works out for you. X

[@ScottHampshire]

@@Grunblau That sounds like....quite the ride. I'm glad that you're talented enough to keep landing on some feet while you're running. Still hoping for some more fun in the future, but priorities are always yourself/family first. Be well!

[@jdmccorful]

The more talent you have the more "money" will try to waste you.

[@Frank-bh3cm]

Hope you're ok? We're looking forward to your next video!

[@ShadowVipers]

I found this response from him in another comment: "Hope to return to making videos at some point. I took an exciting consulting job that hasn’t left me with a lot of tinker time..."

[@ShadowVipers]

@Drog .NDTrax how is he susceptible to toxic metal exposure, he's not eatting the stuff.

[@ShadowVipers]

@Drog .NDTrax Sorry I phrased that wrong, I meant to ask what kind of material does he work with that would cause toxic exposure? I know Brass can be toxic if you overheat it, but other than that aluminum casting is fairly safe right?

[@Am3r1knu]

I've seen that he also works with lead, so lead poisoning would be another possibility.

[@PhilVandelay]

Wow. It's almost too pretty to use!

[@atanumamun1]

Haven't seen any new videos from you in quiet a while. Is everything alright with you?

[@ShadowVipers]

I found this response from him in another comment: "Hope to return to making videos at some point. I took an exciting consulting job that hasn’t left me with a lot of tinker time..."

[@benniedeklerk3486]

Hey Brian verry nice work , was wondering where could one find those 3D plans?

[@Mozilafoxx]

An other wonderful cast!. Would you show us how you make a permanent aluminum mold?

[@SuperOrbiter-g8k]

I would add to the hammer head on each side a strong rubber like material to use them to repair damaged metal parts !

[@rockzbassist]

no other video, brian? been waiting for 7 months haha

[@ShadowVipers]

I found this response from him in another comment: "Hope to return to making videos at some point. I took an exciting consulting job that hasn’t left me with a lot of tinker time..."

[@galenw2339]

Do you remember when Brian use to make videos? Pepperidge Farm remembers...

[@b5a5m5]

Brian! Hear this plea of your fellow Brian and post more videos! Your style & editing is superb just like your projects and I miss getting inspired by them! Hope to see more of your stuff in the future! - Brian

[@derekforestier2892]

I was so glad when jimmy mentioned your name. I think you have a great channel, and have mentioned you to him in the past. I hope you have continued success, and I love to see your channel grow. Great build by the way.

[@sergemarcoux7762]

Are you ok?! We miss you and your awesome videos!!!

[@donovan007007]

What happened???.... did this guy disappear? No vids in a year

[@1stzard]

I think it is because he touched the lead

[@XaviarJS]

If you plan on making more I'll buy one..

[@angryrabbit7682]

Where are you?

[@ShadowVipers]

I found this response from him in another comment: "Hope to return to making videos at some point. I took an exciting consulting job that hasn’t left me with a lot of tinker time..."

[@sirtblairjr]

Hi Brain😎, I've watched a couple of your videos today very educational and very interesting. You do some really good work. I have a question for you,tho? Do you keep the plastic and melt down the plastic for your 3D printer? Sorry, I don't have one so I don't know? Hit me up Thanks SirTbj

[@yarbone7]

Will you ever be doing more videos on the dominoes project? I subscribed when I saw those videos, but I never got to see it finished.

[@Grunblau]

+Owltruism They are an on going project... I am working on getting them produced at a local foundry. I took a break from them to do some other things. I have footage of how I cleaned them up and polished them ready to go. I just need to finish the box or design a production version box since the one I started making would be $1000+ just for the box!

[@yarbone7]

Glad to hear you haven't forgotten about them! I can't wait :D

[@maikeydii]

That must have been a box (made out) of gold! :D

[@AEON.]

Hey Brian, does chlorine (bleach - which is what accelerators use to cure ca glue faster) - does it make the ca weaker or stick less, brittle, soft, harder? Thanks in advance!

[@Grunblau]

I try to only use accelerator when absolutely necessary. It can make the CA glue exhibit some weird properties like cracking, turning white, etc…

[@Ede74]

Long time no see Brian...

[@daltanionwaves]

What happens if you use cured sodium silicate silica sand as green sand? It's too solid? But could you use cured silica sand instead of plaster for a die cast sort of mold?

[@Grunblau]

All methods have their advantages... Sodium silicate is fairly sturdy if mold parts are moved around (think sugar cube). This also means it is a PIA to demold. Plaster is great for detail and when used in investment casting, it can allow for undercuts. Sodium silicate allows gasses to more readily escape than plaster but it will not produce as good of a surface as Petrobond, for example.

[@beatrice5772]

Where did this guy disappear to? His videos were great!

[@Grunblau]

Hey, thanks! Hope to return to making videos at some point. I took an exciting consulting job that hasn’t left me with a lot of tinker time...

[@beatrice5772]

Thanks for replying! Yah, jobs can be like that. Glad you are doing well.

[@selfdestructint]

+1 Look forward to it!

[@bradley3549]

@@Grunblau Common!

[@chaddles623]

Wow, your skills are rare. Have ya though about casting a "Bench Vice"? I think that would be really cool,since good vices are very expressive.

[@Grunblau]

+Roof RT Yes I have! Then I saw OX tools master build. I still might but just as a side project.

[@beepIL]

isn't lead a soft metal? which means the hammer head will just deform and have holes in it if i try to hit a nail with it ?

[@xxredgamer2646]

beepIL very It's very heavy though Usually when lead is casted it's in a casing so it is harder

[@AltHistoryX]

He added a hardener.

[@matthewcornelison4786]

Lead in its hardest form is to soft for a hammer

[@jonathonhaberkorn233]

The hammer is made of lead so that you dont damage delicate things while beating them, like bearings.

[@ryanmcgowan3061]

It's not for hammering nails. It's a dead-blow hammer. Most dead-blow hammers are made of polyurethane or brass. They absorb the impact and don't bounce.

[@mikoji123]

Where are you now?

[@klimbikovabastlirna]

very cool. but for what it will be this hammer? lead is quite soft to hit anything, don't you think?

[@Spiralexe]

Was just thinking "its been a while since brian uploaded" yesterday

[@Grunblau]

+SpiralGaming I have been trying to the 1 every month or so! Thanks for the comment!

[@Wobblybob2004]

Brian... kzbin.info/www/bejne/nma2f3SiqrSdbLc You owe me 11 videos.

[@skyrider4789]

5:44 "this X..." What X? I got lost here. I want to duplicate this process for a project. Thank you for this video!

[@Grunblau]

Anything you scratch in the sand parting face will transfer to the other side. I drew an X in the sand parting face. When the other side is formed, that X is also formed. This gives you a reference point for cutting the runners in one side of the mold to meet up with the sprue in the other side of the mold. Hope this helps!

[@skyrider4789]

Thank you for the explanation. I just subscribed. Where in the US are you, if you don't mind saying?

[@OneOfDisease]

It's a thing of beauty, but is it a thing of utility as well?

[@Draskinn]

Yeah, I was wondering that too. Lead is kind of on the soft side depending on what your hitting I'd think that hammer would get dinged to hell fairly quickly.

[@clemwyo]

Draskinn machinists use lead hammers all the time for moving and aligning parts in lathe chucks and mill vises. They don't damage the parts and are a sort of deadblow hammer. When the head becomes too beat up, you remelt and repour the head. The handle can be reused over and over. Craig

[@ralphmourik]

WOW! awesome work, why did I just find this now? I hope to achieve this level of craftsmanship one day 👍👍

[@jamesjinks8080]

Add another.... instead of lead, heat pressure inject HPDE.

[@azuritet3]

lead is very toxic and dangerous to work with and so is plastic. i suggest making all of your hammers out of gold.

[@BrassLock]

+AzuriteT3 : That's a very practical idea and sure to be a commercial success. The guys at Perth Mint would be happy to come in on the idea, as they are bored with casting gold coins and medallions.

[@BrassLock]

Nerdy, Retro, Gaming - Bone Head

[@alecwhatshisname5170]

Nerdy, Retro, Gaming - pin head

[@theexchipmunk]

No, that would not really work with what such a hammer is meant for. You need a good amount weight but a soft material. A lead hammer is the best but, well, made from lead. Copper is also a possibility (we use copper hammers) but you can't make them this way.

[@DylansDIYWorkshop]

I thought lead was toxic... am I missing something here?

[@Saiserk]

Actually it is highly poisonous, It can kill you, destroys many neurons, and for that, makes you dumb way fast, but... well xD

[@finnelhumano6096]

Unless you use the hammer as a lollipop it should be fine.

[@65bellett]

That hammer would be going straight into the trophy cabinet. It's just to beautiful lol

[@e9757gfk]

Hi! Great video and loved to see the process. But I just asking myself how and when a lead headed hammer could be useful? Thanks !

[@PeteBrubaker]

Amazing work as always Brian! You know who needs one of these? Tom Lipton over at Ox Tools.

[@mavos1211]

Absolute pleasure to watch you work....... a true craftsman in every sense of the word. I try to start my projects emulating how you work but quickly just end up in a total mess with my fingers superglued to my forehead and the cat taking a dump in my casting box!

[@vonantero9458]

Beautiful work! How big healthy concern is the lead in such tool? I'm asking because I really don't know. Lead just has a toxic ring to it, but I don't know how dangerous it actually is in practice :)

[@1pcfred]

+ Von Antero the health risk really depends on how much you can resist the temptation to eat the hammer. Some struggle more than others with that.

[@avid0g]

Wash your hands with abrasive soap. Regular soap doesn't remove all residue. Transfer via clothing and shoe soles is an issue. If you overheated the liquid lead, the vapour is very toxic. If you get a hint of sweetness, it is too late.

[@theawesomer]

Beautiful build. Sharing on The Awesomer.

[@GenerationAI2024]

Hello, i was wondering what kind of sand you´re using be course it looks very very fine. Thanks for sharing.

[@davidduffy9806]

I am new to your channel, brilliant, first rate, leading edge!

[@Grunblau]

+david duffy Thanks and Welcome!

[@danieltabone1]

Great result and an amazing finish. One question, what can this hammer be used for as lead is pretty malleable when hitting other, harder metals? Or is this hammer purely for aesthetics?

[@garfield1415]

That hammer, I gotta say looks absolutely amazing! Plus the video production quality is excellent too! I know I don't comment often but your home made projects look like really high end pieces! I'm sure you could make an awful lot of money from those if you really wanted to, plus the fact they are all hand made!

[@BossSpringsteen69]

Wow! Seriously? Talk about inspiring.

[@Grunblau]

Thanks 👍

[@raistnox]

I don't suppose it would be possible to get ahold of your 3d print files for this? I'd love to be able to make my own

[@Grunblau]

I am considering how to do a download section on my website. I’ll need to go back through the archives 🤔

[@raistnox]

@@Grunblau sounds awesome, even if you put the files up as a purchase I'm sure you'd get a lot of interest.

[@wapkoen]

absolutely amazing execution. a treat as always. thank you ;)

[@attitude4334]

This is way better than most of the metal casting channels! You’ve set the bar and keep up the great work!

[@paulanthonyjohns]

this is seriously impressive work

[@metap0Pe]

That was fantastic! Great to see the homemade sand rammers in use:D If I have to suggest something it would be to turn your camera to manual focus when you do work that you want to speed up. That way the focus would not jump back and forth.

[@Grunblau]

+hans peder sahl Thanks. I experimented with that a while ago. For my current setup autofocus leads to less 'I moved one inch closer to the camera now the last 5 minutes of me pulling the pattern out of the sand is out of focus and I have to reshoot the whole thing' surprises. I would like to get a better camera that doesn't rely on so much on digital focus. Until then, the trade off is refocus twitches unless I have a stationary focus...

[@bcn1gh7h4wk]

"YOU WANT ME TO PUT DOWN THE HAMMAH!??!?!??!?!" "just kidding.... I ain't putting it down... look at it... it's one sexy hammer... the curve, the sheen, the weight.... ahhhhh it's so strikingly beautiful.... "

[@jerryp1012]

I really hope to see more videos

[@tombashan1]

Pro tip: Pouring acetone on and plastic gives it a great finish, almost perfectly smooth.

[@Didymus-vz6uy]

Only on certain kinds. It wouldnt work on PLA.

[@aliimran5618]

How can he made plastic half humer

[@sebianoti]

It's been over a year? Omg I can't believe it, seems like only yesterday you uploaded it. Well... Kinda, like if yesterday felt more like a year

[@BruceAUlrich]

Fascinating process! Thanks for the thorough video. I heard that episode and I have subscribed to you for a while, but didn't realize Jimmy was talking about you. ha ha

[@roleic7246]

What did you use for degassing agent of the molten aluminium in the crucible? Baking powder (sodiumbicarbonate)? Have you checked the porosity? Did the degassing work well?

[@zeitgeist909]

I was going to ask how he makes his audio sound so...? 70's? But the last 20 seconds clinched it for me. A large bump in the midrange with very low bottom end and top end! Thanks!! Also, maybe a decent mic? I'd still love to know the actual process and if I'm close tho.

[@sebianoti]

I have never seen 2 part casting done using different metals, very awesomely done.

[@broo_shs]

Hey And Greetings from Finland Brian Oltrogge i Must Ask Have you thinking of doing a similar hammer, but the hammer's head would be copper and the middle would be an aluminum case like that hammer have + with copper at its ends ?????? And have you ever thought about selling your Cast Or Some else what you have made If Someone Your subscriber Wanna Buy

[@Tunkkis]

I really like the song you used in the into and outro. Fredrik Knudsen also often used the same one in his Down The Rabbit hole videos (frankly, they're practically speaking mini-documentaries), so I instantly recognized it. Fantastic work on the hammer itself. Came out looking very nice. I hope you remembered to polish those hammer faces.

[@davidurdahl6656]

Damn. I like your video style. And of your course your not making videos anymore. Oh well. Looks likes there's plenty to watch.

[@IntegraDIY]

I watched the whole video just to see 15 seconds of the finished hammer. Some better shots would've been cool

[@Grunblau]

+Integra DIY point taken- I felt like it was shown off at every step and I opted for a tidy end rather that beating every one over the head with it.... (pun intended). :)

[@SweMisterB]

Really nice, but... Always make the head mold in aluminum. Store it with the hammer. When you beat the crap out of the hammer, (and you will.) just cast a new head. I want one. If there is anything to wine about, it might be beneficial to make the alu-casting slightly thicker around the head, since it will have to deal with the force, over and over. But it looks so sexy...

[@Spookykitty1138]

I got suck into one of those random KZbin holes and came across this video. Wow, every bit of this video is amazing! I subscribed before it was over. Thank you so much for sharing your beautiful creations with us. Please come back and share some more. :) I'm off to watch more of your videos.

[@kalleklp7291]

It's been a while and I wondered what your next video would be...now I know. As always, top quality and care for the detail..! There is just one problem...the hammer is almost too pretty to use.

[@aserta]

CA glue, but i'm wondering about wood glue, for something like this, it should leave a very nice baby bottom smooth finish. And, it's less-a-pain in the derriere to apply.

[@bernard4007]

I want to buy one...!!

[@therealdeadpen]

I know it has been a year since you made a video, don't know why it is your business though, just thought you might come back to make a 100k and 150k plaque for subs.

[@v12tommy]

Wow that is awesome. I'd love to get into that kind of stuff some day, but I need shop space first. I'm curious a wheel hammer is very similar to that but with a brass head. Since I know brass has a higher melting point than aluminum, would it be possible to do the same thing by casting the brass first and then the aluminum handle? One of my dad's favorite tools is a Proto wheel hammer from the 1960's used at the Indy 500. I'd love to make him sort of a modern recreation someday, as wheel hammers get pretty beat up as you use them. I love your design where the alumum goes all the way around the head.

[@gusbisbal9803]

Brian, I am going to ask you this with respect because I have a manufacturing and prototyping business and I do the same thing. Are you procrastinating from doing Lost wax. Its a scary multistage process with a lot of points of failure. God knows the amount of scrap I produced when first doing it but it will be everything you wish ti to be when you do it. I have some tips for it. Would love to skype you about it some day if your up for it.

[@victorwidell9751]

Was the Film Noir vibe intentional? Awesome.

[@Grunblau]

+Victor Widell Not at first, then every time I thought about "the hammer" I heard the narrator.

[@Ferelmakina]

The quality of your videos goes in one direction: up. You're not only keeping your creativity but improving your editing + storytelling abilities. Well done Brian!

[@davedespain9101]

NASA had a $700 hammer some time in the 80's. If they'd bought this hammer, it would have made sense. Beautiful work.

[@andrew32155]

I was wondering why you use CA glue for final surface finishing on the 3D printed parts instead of a self leveling/filling spray primer. Is it just an issue of durability when making the sand molds?

[@SEBTECHDIY]

I subscribed on the basis of a single video! 😏 Very impressive !!!!

[@Grunblau]

+SEB TECH DIY Thanks and welcome!

[@scottleft3672]

The roads are covered in the new Zinc wheel balance weights...much safer than lead....and iron is nearly as eavy as lead.

[@Tommo020788]

Would a permanent mold out of aluminum work? I mean, if u cast aluminum into an aluminum mold, would it be really difficult to remove (wouldnt they bond together?)? Or wouldn't the heat from the molten metal cause damage over time to the detail on the mold by melting a layer off each time? I thought of doing that myself but I figured it wouldn't work very well. I'd like to hear from someone who has done this. Might give it a try

[@25centsapop]

I might have missed the reason for this, but why lead for the head? It would deform easily on delicate work right? Still and amazing piece of work. Great video as always

[@asvarien]

I do like watching these type of videoes but as an Englishman, hearing Americans pronounce Aluminium really irks me!

[@rick5078]

totally new to casting, still in learning mode before I even build a furnace. If you don't mind me asking, what was the liquid/oil you used to mix with the sodium silica sand?

[@machinist7230]

Nice work! You should really consider making a permanent mold though, if you plan on using it, lead hammers get mangled much quicker than other soft hammers - its why hammer manufacturers like cook sell the molds.

[@NIKOLAZ621]

I really do not understand the 258 unlikes! but I respect them. I enjoyed very much your cast aluminum and lead hammer. Thank you.

[@boelwerkr]

Definitive nicer looking than mine, but i only invested two hours, a can, a pipe, some lead and some screws. I'm too impatient. :-)

[@DFSqu]

That's a mighty pretty hammer. Well done. The thin aluminum walls of the hammer head remind me of a question I've looked into but haven't been able to find an answer to. Maybe you can help. I work at a rotational molding plastics company. The aluminum molds that we turn in ovens are made from thin wall aluminum cast to match a wooden plug CNCed to our designs. My question is, how are these molds made? How does a foundry create a mold that is roughly 1/2" thick and account for the pattern on one side that will become the finished shape and the mounting features on the other side. My guess is that they use some kind of material that is lost in the casting processes. What do you think? Thanks

[@tonim.2765]

hi, want is the story about "Grün Blau" the german words for green and blue? btw you make an awesome job in your videos. Greeting from germany!