Docs Casting Plaster

For those most difficult resin Cad-Cam models... If you are using this material to simply overcome the defects that you encounter from the use of carving or RP waxes, you can just as well use a normal jewelry burnout cycle in the same oven as your normal daily production flasks. Method B: (Smaller flasks or small flask-less castings) Note: Casting flask-less is ideal with this type of material · Program your oven controller for a ramp rate from 4 degrees per minute to a maximum of 10 degrees per minute. This investment material is very resistant to shock so your ramp up speed can be faster than with gypsum-bonded investment. · About 1 hour after investing, put the flask into an oven that is preheated to about 300 o F (150 o C), with the wax button facing down. · Ramp directly up to your top burnout temperature of about 1350 o F - 1600 o F, depending on the metal you are burning out. For photopolymer...

Sometimes we are asked about a trick we pulled off years ago to prove how good Docs really is. Okay here goes-Assuming injection wax only, and you will be casting diamonds "stone in place" very little changes. Put he diamonds in the wax just as you would in metal. Be sure to use decent diamonds, certain extensive flaws will lead to breakage. Do be neat-no sloppy wax work allowed. No special alloy is required-Just use 95/5 platinum. You will keep the "burnout" down to 850 or 900 degrees F! This will hopefully avoid damaging the diamonds with excessive heat such as a 1300 degree burnout. That kind of heat will ruin any stone let alone diamonds. Some folks are brave enough to try this with other stones such as sapphire, but we make no guarantees here. So you keep the oven at 900 F and hold that long enough for all the wax to burn out. This is at least six hours. Then you remove the flask, let it cool to 500F and cast as per usual. I have posted a picture or two from wh...

One good fix for this is use a 1,600 degree burnout rather than the suggested 1250. Docs will fuse into a far stronger material and withstand the expansion pressure presented by resin models. Thanks to Manuel Novo for this tip which came from a new ultra smooth product from Envision. The new material is a kind of orange color and is very highly detailed. The picture is just a good casting done in Docs and 95oPd.

Jewelers and casters are not often big time bloggers. But, hey this is for you. If you have a question or a comment on Docs, casting, metals or whatever ails your castings. You can post by name or anonymously. What do you think of that purple?

Docs is a high speed and high temperature casting investment plaster. This is the material that literally revolutionized platinum casting back in the 1990's. The materials high strength and very low platinum flask temperature improves results at almost any casting shop. When a 1600 degree burnout is used, it is capable of withstanding the most demanding model materials like high resolution resins from Cad Cam operations. This is whee we keep instructions and tips on using Docs-written by us here at PMWest or posted by you-the users. Docs what you use for white gold, palladium white gold, 950 palladium or of course any platinum alloy. If you are in need of "same day" casting our three hour wax to cast cycle will save your deadlines.