Post by GunZ McGraw on Jan 11, 2015 16:16:53 GMT -5
This is a recipe I have tweak from gesso recipes found on the net. Easy to make. Supplies can be found locally. Dries fast and works very well for pulling 325F plastic over styrofoam. Oh.. and you can make it cheaper then commercial foam coats.
Post by GunZ McGraw on Jan 11, 2015 19:10:15 GMT -5
Sticks well enough so far. 325 F heat plus the 25"Hg vacuum and mold strip did not pull any off. Of course this is just for one or 2 prototype pulls. I have enough glue and paint in that mix so the drywall compound should not crack when sitting on the shelf for a long time. I would estimate it would last outside till first rain or slow ... lol I've use this on the blue (XPS) foam as well as the white (EPS).
Post by GunZ McGraw on Jan 13, 2015 20:00:07 GMT -5
Pulled this plug with 030 HIPS after drilling some vent holes. Went hot to pick up as much detail as possible. ( Not a detailed model mind you ) 030 is a very thin material but seeing how it's a waste mold it will work fine for a plaster cast. The styrofoam plug released well enough with a little split on the sheet. Nothing some hot glue can't fix. A little webbing on the corners too. The foam coat protected the styrofoam and did not pull or peel off the plug.