bhorlings Posted December 10, 2007 Report Share Posted December 10, 2007 I have a one piece mold that on my first pours the plastic did not setup very well because I did not heat it enough. I cleaned it out as best as I could but there is still some flake and plastic in the grooves. The leftover plastic and flake has setup now. How can I clean it out so I can pour with the mold again? Thanks! Quote Link to comment Share on other sites More sharing options...
tubinator Posted December 10, 2007 Report Share Posted December 10, 2007 Just poor it again with properly heated/mixed plastic. When you remove it, it should pull out all the crap from the first bad pour. Quote Link to comment Share on other sites More sharing options...
bhorlings Posted December 10, 2007 Author Report Share Posted December 10, 2007 I tried that and it did not see to work. Any other suggestions? I was thinking of putting the mold in the oven until it melted the plastic again. Quote Link to comment Share on other sites More sharing options...
nova Posted December 10, 2007 Report Share Posted December 10, 2007 That should work. www.novalures.com Quote Link to comment Share on other sites More sharing options...
alsworms Posted December 11, 2007 Report Share Posted December 11, 2007 Is this an RTV mold or plaster? Another thing you might try is sprinkle a little popcorn salt in the cavities. The salt should pick that stuff up really well, then you should be able to tip it over and the crap should fall out. If you still have some plastic and flake in the cavities, try the salt again and pour a well-mixed plastic over it. Works on both molds, but a little better with RTV. Quote Link to comment Share on other sites More sharing options...
bhorlings Posted December 11, 2007 Author Report Share Posted December 11, 2007 This is for an aluminum mold. Quote Link to comment Share on other sites More sharing options...
alsworms Posted December 11, 2007 Report Share Posted December 11, 2007 This is for an aluminum mold. My fault. It works for aluminum too! Quote Link to comment Share on other sites More sharing options...
bhorlings Posted December 11, 2007 Author Report Share Posted December 11, 2007 I'll give it a shot. Thanks. Quote Link to comment Share on other sites More sharing options...
BCBaits Posted December 11, 2007 Report Share Posted December 11, 2007 Try a standard tooth brush. The soft bristles should harm the mold but be stiff enough to pull the plastic and flake out. Quote Link to comment Share on other sites More sharing options...
Delw Posted December 11, 2007 Report Share Posted December 11, 2007 there are a few ways to clean these. carb cleaner or brake cleaner works with a toothbrush like bcbaits said. you can also use mineral spirits with a tooth brush. A rag will left fur balls all over the ribs but it does work. the other way (I tried it late last night) is to heat up some plastic on the hot side and pour it over the molds while they are open. this will help then you should be able to take some brake or carb cleaner and rinse off the residue. the salt trick as mentioned above works as well. sponge works also what ever you do. Don't use brillow pads, scotch bright pads or anything else that will scuff (even in the slightest) the surface. if the surface is scratch the baits will stick to the alum. in order to fix this you can get a buffing wheel for a dremel tool and buff the cavities Quote Link to comment Share on other sites More sharing options...
