rhahn427 Posted January 20, 2009 Report Share Posted January 20, 2009 Anybody pouring plastics when it's cold. I thought I read somewhere that you should not pour under 65 or 70 degrees because it might explode. I don't know if this is true because I pour lead in the cold and that's 3 times the heat. Quote Link to comment Share on other sites More sharing options...
longhorn Posted January 20, 2009 Report Share Posted January 20, 2009 Have never heard that one. I've poured when the temp was in the 30's in my shed with no issues. The plastic will not explode in any temp range that I've heard of. Quote Link to comment Share on other sites More sharing options...
Long Lake Lures Posted January 20, 2009 Report Share Posted January 20, 2009 I pour at a room temp of about 50 degrees, using a microwave and Anchor cup. No problems. Dave Quote Link to comment Share on other sites More sharing options...
rhahn427 Posted January 20, 2009 Author Report Share Posted January 20, 2009 Thanks Guys .........thought it didn't make a difference but wanted to make sure ..... Quote Link to comment Share on other sites More sharing options...
Delw Posted January 20, 2009 Report Share Posted January 20, 2009 Anybody pouring plastics when it's cold. I thought I read somewhere that you should not pour under 65 or 70 degrees because it might explode. I don't know if this is true because I pour lead in the cold and that's 3 times the heat. pouring when cold is not the problem just make sure everything is room temp. The problem lies in that if your pouring in a cold enviroment and you sit you anchor or pyrex with hot plastic down on a cold counter top is will more than likely explode. thats the only explosion I think you will find. Quote Link to comment Share on other sites More sharing options...
bojon Posted January 20, 2009 Report Share Posted January 20, 2009 I dipped tubes thru winters in North Alabama in a unheated garage,and feel it was better for dipping.Seems I could make nicer tubes.As long as you watch the Pyrex cup,ther should be no problem. Quote Link to comment Share on other sites More sharing options...
nova Posted January 21, 2009 Report Share Posted January 21, 2009 (edited) I'm farther north than most here on TU and I've poured when you could see your breath in the shop with no problems other than a runny nose;lol. The only thing is that the plastic cools a little faster in the pyrex because of the air temp; but on the plus side, the baits set up really quickly. www.novalures.com Edited January 21, 2009 by nova Quote Link to comment Share on other sites More sharing options...
bojon Posted January 21, 2009 Report Share Posted January 21, 2009 I remember when I first started pouring lures,that the raw plastic had to be protected from freezing.I think the plastic was then called Plastinol and was from from Herter's.Anyone else remember that? Nova,when it is cold do you find the walls on your tubes thicker? Quote Link to comment Share on other sites More sharing options...
nova Posted January 21, 2009 Report Share Posted January 21, 2009 The plastic will cool quicker and this is the reason for the thicker tubes; I believe. So, if you're doing 3 dips in the summer you may get away with 2 in the winter, saving time. A way around it would be to get the plastic just a little hotter than you usually do; unless if you're looking for thicker tubes. This is what I like about handpours. You can adjust things to get the results that you require and it allows one to experiment with all kinds of methods. I always say one of the limits to pouring plastic; other than the cost; is one's imagination. www.novalures.com Quote Link to comment Share on other sites More sharing options...
Artificial All The Way Posted February 10, 2009 Report Share Posted February 10, 2009 I poured several times in my out building in the last month. Temp never above 10. Broke 2 py by not putting it down on wood. Place it on the top of the metal micro wave and say good by. No big boom or anything. But nice cracking sound. Just don't place hot glass on cold surface. Below zero air doesn't break them for whatever reason. Quote Link to comment Share on other sites More sharing options...
Vodkaman Posted February 12, 2009 Report Share Posted February 12, 2009 It is all about thermal conductivity. If the heat gets sucked out of the pyrex too fast, the cool surface contracts and causes the crack, as the glass is too hard to distort with the contraction. A plaster jacket would solve the problem and also keep the heat in the pyrex cup and extend pouring time in such cold conditions. Jim (Ghostbaits) wrote a very good article for the idea. http://www.tackleunderground.com/forum/soft-plastics/11472-keep-your-pyrex-cup-plastic-warm-dipping-multiple-color-pours.html Make sure the plaster is totally dried out, at least 10 days in a warm cupboard, or a few hours in a very low oven with the door open 1". Dave Quote Link to comment Share on other sites More sharing options...
