03-16-2010, 07:50 AM
If you are expecting an exceptionally long run of a casting...make a mold "box".
Place your mold (cavity side up) into a foamcore ( or lego ) box which has 1/4" clearance all round....( I use a few drops of Super Glue to hold the mold down...keeps it from floating )....then, mix up a big batch of resin and pour it into the box completly covering the mold.....about 1/4" over the highest point....place into the pressure pot just like you were casting a part....when the resin is cured take the box out of the mold...take the box apart and remove the mold from your resin "mold box". You now have a "negative" copy of your mold.
This "mold Box" will last nearly forever..allowing you to make a copy of the original mold whenever you need one.
Place your mold (cavity side up) into a foamcore ( or lego ) box which has 1/4" clearance all round....( I use a few drops of Super Glue to hold the mold down...keeps it from floating )....then, mix up a big batch of resin and pour it into the box completly covering the mold.....about 1/4" over the highest point....place into the pressure pot just like you were casting a part....when the resin is cured take the box out of the mold...take the box apart and remove the mold from your resin "mold box". You now have a "negative" copy of your mold.
This "mold Box" will last nearly forever..allowing you to make a copy of the original mold whenever you need one.