hey guys, i have been using suncure to glass my boards and adding a little MEKP to the mix as well as SA for hotcoat. after hot coat, when i start to sand it is still way too tacky, and gumming up alot of sandpaper, its taking me several hours to just get it to sandable. i am desperate for help with this issue and if anyone has any suggestions i would greatly appreciate it! i have tried this method on 3 boards and i’m starting to feel like an ass. by the way i am using silmar 249 B. thank you guys!
sounds like your not adding enough surfacing agent
i use between 120 cc’s to 150 cc’s for a galion of resin
hope this helps
…hey Sdrepairman the correct quantity is 50cc per litre
Sounds like you need to let the filler coat sit for five minutes before exposing it. Give the wax time to flat on the top…
Jonny, you were my favorite Pistol. HAHA! When I hot-Coat, I put normal amount of Catalist in with Solar Powder. Let it kick, then use the Solar-Ez to speed up drying time. Sometimes, just using Solar-Ez it will kick funny and will be hard to sand. Barry
thanks guys! i really appreciate the feed back. i think i just did not use enough SA. i know its 4oz to a gallon, but i have been adding the SA to each batch instead of the whole gallon for each board in order to keep the board one color. i had an experience in which i used resin of the same exact type but from 2 different gallons, and had a very slight difference in color of the two. anyway thanks guys
30 seconds in the sun, then a minute out of the sun, then back in the sun. That way the wax has time to rise. If the suncure kicks to quickly the wax doesn’t have time to rise.
Two identical gallons of Simar 249 are NOT going to come up differant colors. You're doing something to cause it. G-rat's method is correct. I walk em out in the sun for a count to 20. Back inside until I see the hotcoat cloud up or haze and then out in the sun for set. Use the amount of powder specified by the manufactuer per gallon. Don't mix small batches. That's where your probs will start. If you've got good sunlight or a UV box you don't need to use catalyst at all. Learn the proper method. If you're going to use catalyst why waist money on UV powder?
Mcding is right…
You should split your batches. UV catalyst for lams only and regular for hot coats.
In our shop we have a drum of UV for lams only.
and a second drum of regular 249A we use for hot coats, fins, pigmented laminations, etc… Its much more cost effective to split your batches.
I always walk away for 5 minutes before exposing the board to sun. If you look close you should see a film of wax on the surface before exposing the board.