Natecb123 Posted October 28, 2018 Report Share Posted October 28, 2018 Hi there! So my question is very basic but I just want to know the best way to fix a plaster mold that has broken. I have used in weld to fix all my broken ceramics and it has worked beautifully, but I wasn’t sure if it would work on plaster? Another thing I was going to try was to use plaster to glue it back on, but wasn’t sure if that would work either so just wanted to ask for some advice first. Thanks! Nate Link to comment Share on other sites More sharing options...
Chilly Posted October 31, 2018 Report Share Posted October 31, 2018 I experimented with all sorts of glues. Used to have it all documented, can't remember if it went during a de-clutter. I'll have a look in the studio tomorrow. Link to comment Share on other sites More sharing options...
Mark C. Posted November 1, 2018 Report Share Posted November 1, 2018 I have found that waterproof wood working glue works great-its the yellow type two stuff.I'm on the road but can post brand name when I get home in a day. the glue name is titebond type 2 Link to comment Share on other sites More sharing options...
Chilly Posted November 2, 2018 Report Share Posted November 2, 2018 This was the list of glues I tested. I kept samples 4,5,6 and 7. Looking at them, sample 4 has the least noticeable glue line. All four are still firmly stuck and it must be well over three years ago that I tested them. I stuck the top (well) part of a bonsai dish mould back together. Don't remember which glue I used, would have been the cheapest/easiest of the four listed above. Link to comment Share on other sites More sharing options...
Rae Reich Posted November 2, 2018 Report Share Posted November 2, 2018 Cascamite in the U.K., is that a milk (casein) based glue? That's like white glue in the states, Elmers or other white school glues work fine. Just don't get any on the inside of the mold. Yellow Wood Glue might be casein based, too. Link to comment Share on other sites More sharing options...
Dick White Posted November 3, 2018 Report Share Posted November 3, 2018 Well, actually, Cascamite in the EU is a synthetic plastic resin glue (urea formaldehyde), similar to Weldwood Plastic Resin glue in the US. It is a powder that is mixed with water, but when cured is water resistant. "White glues" are PVA (poly vinyl acetate), one common brand is Elmer's. Yellow carpenter's wood glues are also PVA, but with other resins added to improve their performance in woodworking applications, such as open time, tack, and water/weather resistance. The yellow color is simply a dye to distinguish it from plain white PVA glues. Casein glues are made from milk proteins, and are water resistant. Elmer's School Glue at one time was a casein-based glue, but now is a PVA glue. Link to comment Share on other sites More sharing options...
Rae Reich Posted November 3, 2018 Report Share Posted November 3, 2018 No wonder it tastes different from my childhood school glue! Link to comment Share on other sites More sharing options...
Chilly Posted November 4, 2018 Report Share Posted November 4, 2018 On 11/2/2018 at 6:22 PM, Rae Reich said: Just don't get any on the inside of the mold. Yes, forgot to add that. I think the ease of using a glue probably outweighs it's gluability. PVA is easier to use and remove, Superglues are a PIT..... and Araldite needs mixing, so if I need to fix another mould in the future, I'd use PVA. Link to comment Share on other sites More sharing options...
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