bribass Posted November 12, 2020 Report Share Posted November 12, 2020 Hey guys, was hoping for some help with a strange problem. We have heads that are made with lead alloy from a spincast machine. No matter what we do - we are getting weird like fish eye look on the heads. it looks like little salt dots on the heads. Absolutely no issues when hand pouring pure soft lead. None at all. only an issue with these spincast heads. Any way to fix this, very frustrated at this point! Thank you Quote Link to comment Share on other sites More sharing options...
Basseducer Posted November 12, 2020 Report Share Posted November 12, 2020 Almost looks like the surface wasn't clean and the paint shied away from that spot. Quote Link to comment Share on other sites More sharing options...
Munkin Posted November 12, 2020 Report Share Posted November 12, 2020 I have had problems like the bottom one when I mixed together 2 different powder paints. Do you use a lot of talc in the spincast mold? That gave me some painting problems before. Allen Quote Link to comment Share on other sites More sharing options...
rustedhook Posted November 12, 2020 Report Share Posted November 12, 2020 9 hours ago, bribass said: Hey guys, was hoping for some help with a strange problem. We have heads that are made with lead alloy from a spincast machine. No matter what we do - we are getting weird like fish eye look on the heads. it looks like little salt dots on the heads. Absolutely no issues when hand pouring pure soft lead. None at all. only an issue with these spincast heads. Any way to fix this, very frustrated at this point! Thank you I have this problem also since I ran out of the lead that used to be used for roof vent pipes. It is frustrating. I just re-dip the head after it cools to just put a dusting on and heat it. If you find a fix let us know. Quote Link to comment Share on other sites More sharing options...
Fatman Posted November 12, 2020 Report Share Posted November 12, 2020 before you do anything with them get some vinagar and clean the heads in it, rinse and dry really well then heat and try to powder coat them. A friend who used drop out spray had that problem and did the cleaning in vinegar and it took care of the problem 1 Quote Link to comment Share on other sites More sharing options...
dlaery Posted November 12, 2020 Report Share Posted November 12, 2020 I agree completly with Fatman. I have had that problem before and it is usually because of too much talc in the molds. it also happend with some very old powder paint. the vinagar did fix the problem for me. I mixed he vinagar with half water, heated the water to 180F and then rinsed in clear water. 1 Quote Link to comment Share on other sites More sharing options...
