Premium Jewelry Making Casting Powder Lost Wax Investment Powder 5Lbs

Works well with intricate jewelry

solid powder

great product

Makes great casts if the directions are closely followed. Wish investment was cheaper in general though. The inner bag wasn’t sealed properly too and some on the plaster was wasted.

Easy to use and produces great results with fine detail.

So good buy it

After your sticker shock, just don't even think about trying wall plaster (yes, I did). Now-a-days it's so full of 'easy sand' and 'lighter than the other guy' additives that it just can't be used for any kind of molding that involves heat. Plaster-of-Paris has it's own tradeoffs you can read about elsewhere.Compared to either, this stuff requires about 1/4 the water while still being very pourable. Moreover it doesn't take on air bubbles unless you are VERY aggressive with the stirring. You don't want (or need) to use a high speed drill - use a variable speed and keep RPM rather low.It does set fairly quickly. You want to be done pouring and de-gassing your mold within 10 minutes of adding water but unless the object has a troublesome crevasse I rarely get more than a bubble or 2 during de-gassing and the surface itself never rises a bit (like some plasters do). Surface rise indicates fine bubbles that will never come out. So even if you don't have a vacuum chamber, very few products have any hope of giving results even close to this and if you have one (recommended) this should easily stack up to any similarly priced products.For planning purposes I wish they told you what volume to expect. I only used it twice so far and estimate I'll get somewhere around 50-55 cu.in from a 5 lb. bag. That's something short of 900cc or 30 fl. oz. My casting flask is 3"x4" and I expect to be able to fill it 3 times. 4 if I measure really carefully and don't need it completely full every time. You may not have time to scrape the dregs from your mixing bowl before setting prevents de-gassing so expect a little waste unless you are dexterous.

Mixes the same as the optima, but 100% not near as fine or able to fill voids completely under vacuum. Tried it to see if this cheaper version was as good, and was far disappointed, it failed to capture important relief holes of 5mm in 3 spots leading to a ruptured cast due to internal pressure under cooling. going back to the higher grade tossing this junk out.