finlander Posted May 30, 2004 Report Share Posted May 30, 2004 Haven't been here in awhile. Good to be back. I got some plastic from Del over the winter. This pm I started making some grubs. I heated the plastic in a pyrex cup in the microwave. It went clear. I stirred in some liquid silver metallic color after I took the plastic out of the oven. I stirred it up really well. The silver flecks seem to settle in the cup after abit, and the plastic in the mold doesn't want to firm up. I tried to reheat the plastic again but with the color in there now ( with the silver metal ) but stopped after I heard this "sound". Figured the metal was doing it. Anyone know what's going on. I don't remember if there was instructions with the Calhoun when I got it. Thanks. What I do remember is that one type of color is added before, another type ( liquid??) is added at another time. :oops: : Quote Link to comment Share on other sites More sharing options...
Delw Posted May 30, 2004 Report Share Posted May 30, 2004 finlander Sounds to me like you didnt stir the plastic enough before you poured it. DONT shake it STIR It and stir it good. I use cake beaters on a 1 gal pail and a turbo stirrer with a drill on a 5 gal pale. it must be stirred good. As far as the glitter and color you can heat it again in the microwave as lng as it isnt alum glitter, lure craft and m-f is polyester glitter. I have heated alum glitter in the microwave and had no problems, but its not recomended. CAlhoun plastic us just like any other plastic as far as mixing. Delw Quote Link to comment Share on other sites More sharing options...
finlander Posted May 30, 2004 Author Report Share Posted May 30, 2004 Are you saying stirring the plastic in the gallon container that it came in?? Before microwaving it? Quote Link to comment Share on other sites More sharing options...
Delw Posted May 30, 2004 Report Share Posted May 30, 2004 Yes, stir it extreamly well. Delw Quote Link to comment Share on other sites More sharing options...
finlander Posted May 31, 2004 Author Report Share Posted May 31, 2004 Yup, that did it! Thanks Del. I now remember that it needed to be mixed thoroughly. Another thing that happened bewilders me. I was reheating some of the plastic that had that silver metallic color in it. This was the plastic that I had not mixed up enough. I added some 'mixed' plastic. i turned on the microwave for 2 min and left the room for a minute. When I came back the time was not up yet. I looked in thru the oven's window to see the Pyrex cup in a multitude of pieces amid the pool of plastic on the bottom of the oven. I did not hear it break and it was not that old and was not cracked. I did not have the oven on 'high' either. The unmixed plastic in the Pyrex has solidified slightly while the newer plastic was in liquid form. Do these two really dislike each other THAT much?? Oh the fun of learning.... Quote Link to comment Share on other sites More sharing options...
LedHed Posted June 1, 2004 Report Share Posted June 1, 2004 Finlander, Ran across the same problem with the pyrex cup. When I did it I had heated up some old plastic and was planning on "thinning" it out with some liquid plastic. After I added the liquid with the hot old plastic, placed the pyrex back into the microwave, and the thing popped. What a mess. Now I heat the old stuff up till it's ready to pour - then I add the liquid in the center of the heated plastic and stir till it starts clumping up and then put it back into the microwave and heat it up again till it's ready to pour. Quote Link to comment Share on other sites More sharing options...
finlander Posted June 1, 2004 Author Report Share Posted June 1, 2004 The only thing is that I don't remember if the plastic in the cup was still hot. It had solidified somewhat. I'm sure it still had some temp to it. My question is WHY it did this........ Quote Link to comment Share on other sites More sharing options...
woodsac Posted June 1, 2004 Report Share Posted June 1, 2004 Pyrex is very sensitive to heat changes. NEVER place a hot pyrex cup on a cool surface!!!! The cheaper type pyrex (imitation) is even worse. I have never had bad luck with anchor brand pyrex, but I know a couple people have. Quote Link to comment Share on other sites More sharing options...
