Making Aluminum Bronze Dagger │Casting Dagger

[@HeimoVN]

Nice work, Aluminium bronze can be be quite challenging to cast. I am wondering if you did a vertical cast of that dagger if the shrinkage can be avoided

[@heyfitzpablum]

Agree, this application would respond better with vertical cast.

[@raulkaap]

I love aluminium bronze. It's the first alloy that I made myself. It is super hard and takes a magnificent polish. Also, different component ratios have different colours.

[@swdweeb]

My hacksaw and files just skate across aluminum bronze. I have to use abrasive wheels to cut that stuff. Good looking blade! Oh and I finally subbed ;-)

[@robinson-foundry]

swdweeb That’s what I experienced as well. It’s very strange to file and cut. Glad you enjoyed it!

[@sephangelo4603]

Redditors can suck it for generalizing bronze then.

[@KingfishStevens-di9ji]

46 year machinist here, you need a new file and hack saw blade. No bronze is harder then a file. A file can cut toolsteel up to 45 Rockwell.

[@dwwolf4636]

Chinesium tools ;)

[@daz41262010]

watching you make the aluminum bronze dagger was fascinating :)

[@nigelpalmer9248]

I once had a job cutting up some old British Navy bronze stuff we tried Diamond and carborundum blades 9" and 12" we couldn't touch it, I noticed you were using a hacksaw on that I always wondered what mix the British Navy used for their bronze props and bearings it was a sight harder than rebar.

[@KingfishStevens-di9ji]

What? No bronze is nowhere near that hard. Rebar is 1014 hotroll steel.

[@Halloween111]

If you add a pinch of silicon to your mix, it may help with flow and shrinkage.

[@luciusirving5926]

4000 series aluminium would help.

[@SeaforgedArtifacts]

Aluminum Bronze Swivel cannon would be fun.

[@robinson-foundry]

SALT PROOF Yes it would!

[@Jp-ue8xz]

you could have hammered a bit the edge before filing, aluminum bronze hardens with hammering... also maybe if you wanted it more yellowish you could have used 92% copper 8% aluminum, or even 92/6/2 Cu/Al/Ni (which is common for some coins)

[@robinson-foundry]

Juan Pablo Alvarez Alfaro Thanks, I’ve tried hammering some of my blades and so far I have really just messed them up.

[@lnk3503]

solve shrinkage problem with vertical casting?

[@petee716]

I vent petrobond sometimes, but when I do I push my vent wire down through the cope with the pattern in place but stop about 1/4" above the pattern. If you just want to let the air out you can just put an open riser at the end, but to let gases out the non-contacting vents will work. They won't work if they're filled with metal.

[@robinson-foundry]

Thanks for the suggestions. Lately I have found that petrobond really doesn’t need much venting. I get away with a lot without any vents at all.

[@shadowmihaiu]

Aluminum bronze, less than 8% aluminum if you want to cold work it, and it is malleable and ductile. Over 8 % becomes very hard.

[@JoseMartinez-xd6de]

Look's AWESOME 👍🏻👍🏻👍🏻👍🏻

[@robertperly6104]

Wow no power tools - nice job 👍🏻

[@paulgeorge7347]

re patination have you tried making a ferric nitrate soloution and dipping the handel whilst hot?

[@АлександрСтариков-э1и]

Робинсон -Молодец 👍😀

[@aemiliusvalen5013]

Love your work man🔥, keep the content coming. Could try a viking/Norse dagger next🤷🏼‍♂️

[@robinson-foundry]

Witlig Jonkers Thanks, I will. Good suggestion I’ll look into that.

[@stevesloan6775]

Really great video! Love your work🤜🏼🤛🏼🇦🇺🍀😎

[@l.d.walters4650]

Have you made a composite bow or ancient Egyptian arrows?

[@VTPSTTU]

I would have been tempted to grind dimples on both sides to create symmetrical dimples. For a dagger, I love the idea of having a more impact-resistant alloy.

[@steven2212]

Very nice. Successful in my opinion.

[@StitchyMe]

Gorgeous.

[@rockelec]

Turned out great.

[@bryansawyers7906]

I'm guessing the white powder you added was flux. What kind did you use? Great video!

[@vincedibona4687]

Cocaine.

[@ReasonAboveEverything]

Is that based on 2000 bc anatolian daggers? Totally enjoying your casting videos especially the historical ones.

[@BladeValant546]

Keep it up!

[@rachelg552353]

Wow! Really impressive!

[@Serbianguy432]

Fascinating!

[@magnuswootton6181]

golden knife!

[@yitzharos]

Would preheating the mould somehow reduce shrinkage?

[@NormReitzel]

How about adding just a -little- bit of phosphorous/copper to the bronze to inrease fluiity?

[@raphlvlogs271]

Aluminum and its alloys tend to make much better hilt materials than blade materials

[@mleeman01]

Beautiful, a true inspiration. What size is your crucible?

[@robinson-foundry]

Michael Leeman Thanks! I don’t remember the number but it’s 7”x 9”.

[@stektirade]

that is a sick forge. how did you get your hands on the keg?

[@raphlvlogs271]

can Aluminum be quenched and hardened like steel?

[@lundgrenbronzestudios]

Sweet!

[@dmill6103]

do u know what the specific alloy or the tin content/percentage is of those two tin bronze examples you showed?

[@Sketchy_Dood]

Very interesting

[@laurislemanis4541]

So, normaly can take some plastic, cut out some form, which i need, dig in sands and cast??? so simple will be works?

[@CharlieMacklin1]

What kind of flux are you using?

[@Templarium]

How does aluminum bronze compare with tin bronze as far as hardness?

[@jaguarnova3932]

Templarium from what I’ve come to understand aluminum bronze is much stronger than tin bronze. The research I’ve read into said it’s comparable to some steels

[@Halloween111]

@@jaguarnova3932 One of it's big claims to fame is that it doesn't spark.

[@valleyforge7231]

Seth Robinson- will you please tell us what equipment you use

[@robinson-foundry]

I made everything I use. I have videos on the furnace build.

[@chandlersnyder308]

Can you make the sword of Achilles

[@jaguarnova3932]

Isn’t aluminum bronze structurally stronger than tin bronze?

[@TheTyler701]

Jaguar Nova yes

[@kingnarothept6917]

You should show your face more, gives it a more "real" feeling.

[@castingtechnology3338]

This!

[@ExiledPiasa]

try castiron bronze

[@hankgriffin5397]

For sale ?

[@bill4639]

Are you going to cut something?

[@KittenRaptor]

'Grinded'?

[@defeathypocrisy1496]

bro copper with tin is best

[@defeathypocrisy1496]

try 20% tin I do 30%

[@hankgriffin5397]

For sale?