Sand Casting Comparison Using Delft Clay and Petrobond

www.diycastings... Craig Dabler demonstrates the differences in sand casting with both Delft Clay and Petrobond. www.diycastings...

[@b-radfrommalibu]

Definitely would have been more helpful if you would have zoomed in to show us the finish on the surface of each of them. That's the whole reason why I was watching this video

[@silverglass6635]

Exactly! Totally agree with you from Malibu.

[@steztoyz]

Agreed. Plus using a master with more detail, so we can see how fine details come out.

[@travissmith7471]

Thanks for sharing... You have answered a lot of my concerns... This was very motivating... I believe am finally ready...

[@joeprimal2044]

Accidental discovery though, the claws left by the vents are kinda cool.

[@LukeCreates.]

Just found information you posted the link in your description thanks Craig stay safe God bless you and your family

[@craigdabler-thediycastings7511]

I just shut down until Monday. Too much going on and needed a break. You can still order but I may not ship it till the 11th. Thanks so much.

[@LukeCreates.]

Hello Craig yes I know I’m in New York City Brooklyn God bless us all stay safe I will be ordering after the 11th then thank you stay safe God bless you and your family

[@scotts4134]

I'm new to pouring. Every time I "pound" the clay into the mold, the clay "cracks" in certain places. It usually doesn't crack or split, where I was using the hammer. When I add more clay, it still happens. Is it possible I'm pounding too hard on the hammer? Thank you in advance.

[@siegfried-karlheinzvonsilb2840]

What do you do with the silver that is poured over the sandcasting on the metal plate? Can you use it again or do it needs to be cleaned after that?

[@cableguyanon9799]

I really appreciate this video. I've been considering doing small castings in brass (a big upgrade from my rough castings using aluminum) and have been looking into delft clay vs petrobond. This is the first video that has clearly demonstrated both products. Again, thanks!

[@craigdabler-thediycastings7511]

I have been taking 50/50 and combining the two and have found it works very well so this might be something also to consider.

[@mischa2643]

Do you need to vent a 50/50 mix?

[@craigdabler-thediycastings7511]

Not usually but on heavier objects I do it anyway since it's so easy.

[@mischa2643]

Craig Dabler thanks for your response!

[@phillium8918]

Excellent video. Would you consider using petrobond sand with fine 999+ silver? I'm wondering if that would be a cheaper way to get molds instead of using graphite molds. It also seems like you can customize the molds any way you want.

[@papucvasile6323]

Va rog sa mi spuneți, de unde pot face rost de rame de turnare?

[@MrSh4W]

Which sand is best for a brass ornament?

[@raybe4001]

Where did you get those flasks and the stand/vice?

[@LaRaeGallant]

Thank you for posting this video! Would you say that there is really no difference in the quality of the pieces (smoothness, shine, etc.)?

[@craigdabler-thediycastings7511]

The two pieces were virtually identical but I will say that if the item was more complicated then the Delft would be far easier to work with because it is a smaller grain and compacts tighter making it stay together better when removing more complicated designs. For big flat designs, the Petrobond works just as well and doesn't require venting which is a real plus.

[@splintercelloo7]

Craig, I know this video is old and not sure if you read your comments but i'd like to know where you get those clay molds. Do you just buy the standard aluminum then grind out your pour hold on the side? I see the typical round ones online but I cannot find one like yours. Also do you have a mold recommendation for casting something longer and more narrow? Specifically a rifle cartridge shape.

[@craigdabler-thediycastings7511]

Hi James, I actually made and sold these but have since replaced them with a much better model available in this size (2 1/8 inside) and 4 inch (3 5/8 inside). My site is www.diycastings.com. Thanks!

[@splintercelloo7]

@@craigdabler-thediycastings7511 oh wow very nice! Thank you. I think I might've just found a new hobby!

[@tealcoo90]

can you reuse the sand again ? i mean the sand that isnt burned black, or even reuse all of it ? just wondering, because to me it dont sound to cheap then if you cant reuse any of the sand o.0

[@craigdabler-thediycastings7511]

Yes, just scrape off the burnt sand and the rest you can reuse. I still have the same sand from over a year ago and I cast quite a bit.

[@russsherwood5978]

where can you get that petrobond sand at? be strong, be safe, and be blessed

[@charliewhite5675]

you covered the air escape vents with the steel plate when clamped , how long or short should these vents be?

[@charliewhite5675]

oops !! i see the ducts in the flask ,,, lol (rookie question)

[@craigdabler-thediycastings7511]

They go out the side and none were covered. They extend from the piece to the side vent channel.

[@NigelTolley]

Any thoughts on the surface finish between the two? Looks like the Delft clay is a bit better, and the petrobond has the pads sunken more.

[@craigdabler-thediycastings7511]

Petrobond is 140 mesh and Delft 220 mesh but after a simple file stroke they will both finish with the same amount of work. Delft allows for better detail since it is more compact and Petrobond can handle more fragile pieces so they both have a place in sand casting.

[@NigelTolley]

@@craigdabler-thediycastings7511 Thanks! Lost all my petrobond, so I'll try some Delft next.

[@stanwhittaker5434]

Sir: how do you figure the amount of silver or gold to use for a casting?....example, i have a sterling ring that weigh's 3grams, would i use 3gram's of silver to cast that same mounting? ....same question for gold say 10kt, it's a "dad's nugget ring that i got for fathers day some 15 years ago, weigh's 3 gram's. i appreciate your video, will be ordering some items from you in very near future...

[@craigdabler-thediycastings7511]

For me, when sand casting, I feel it is important to have at least 1/2 to 3/4 ounce extra to both help push the metal into the mold and help with cooling the metal.

[@stanwhittaker5434]

@@craigdabler-thediycastings7511 thank you sir, that answered my question.

[@theirrigationdude]

Where did you get that little jig that holds your mold?

[@craigdabler-thediycastings7511]

I actually invented this tool and sell it at www.diycastings.com or on Etsy at www.diycastings2.com. Thanks for asking.

[@leighshell1784]

I bought the startup "kit" from you. Which one comes with the kit?

[@craigdabler-thediycastings7511]

Delft is sold through Rio Grande and I sell the Petrobond.

[@leighshell1784]

Jewelry Making Tips Got it. Thanks so much. I was putting "vents" in Petrobond and x4, never could get as good a cast as you do! That explains it!

[@craigdabler-thediycastings7511]

Let me know if you need anything else.

[@LukeCreates.]

Hello Craig great demonstration where could I find your mold stand and clays from so I could order thanks Buddy just found your channel will subscribe

[@nathanlewis5682]

You can get delft clay at riogrande.com

[@brianthornton8312]

Great thanks for that 😊

[@philwhipple4557]

So the petrobond is actually a little less work.

[@craigdabler-thediycastings7511]

It doesn't need venting but if you're doing something with a pattern or detail the Delft is still the better of the two.

[@David-fv7zg]

What does the Borax do?

[@paulossiter]

it removes impurities from the metal

[@ravindrasoni5456]

How u r making casting clay please tell me

[@craigdabler-thediycastings7511]

I'm not making it, just testing it.

[@ravindrasoni5456]

Craig Dabler do u tell me who can halp me for this

[@craigdabler-thediycastings7511]

I sell all of this on my website at www.diycastings.com. I don't make the sand, just the tools.

[@zipciki]

i want this oxy torch its so badass:(

[@eluminateoccultis1966]

What torch did u use

[@craigdabler-thediycastings7511]

Oxygen and propane with a Hoke torch.

[@eluminateoccultis1966]

@@craigdabler-thediycastings7511 im wanteing to melt silver bars into art weve been borrowing a oxyacetelene torch do u thing a hoke torch could melt 10 oz of silver shot ..10 ounce bars is the max id like to make mostly 5 oz and smaller

[@craigdabler-thediycastings7511]

You need to buy an Electro Melt. I've never melted that much with this torch so I don't know if it can or can't.

[@eluminateoccultis1966]

Does the hoke run on the small mapp and oxygen tanks from a hardware store?

[@craigdabler-thediycastings7511]

not sure, but most likely. I use full size bottles with regulators and never used the little bottles. @@eluminateoccultis1966

[@maskebro6762]

So nice content nbr

[@pootnikalexander]

Dude!... ease off the oxygen you are destroying the silvers properties it will make very bad cast. That silver is so embittered you might never be able to re cast without refining.

[@craigdabler-thediycastings7511]

I know, but after 40 years as a bench jeweler I actually have far more experience at this than it appears on the video. I also use the same metal multiple times when making videos and it isn't until its been cast many times that it starts to break down. I've literally cast the same 1 1/2 ounces of sterling silver over 10 pours before it is ready for refining so yeah a neutral flame would be better if making something for a customer but this isn't the case and both castings turned out fine.

[@pootnikalexander]

@@craigdabler-thediycastings7511 Lol I believe you, but if you are watching this for the first time, it is like nails on chalk board. Good vid thanks