Saturday, April 9, 2011

New painted bows

So here's some new bows I put on my website, http://www.bowskin.com/ 
The tillering wasn't the difficult part.The hard part was the painting, so I thought I would share my finds here for aspiring bowyers, or painters that may have similar problems.
 As you can see you can get some wicked cool clean lines and a nice finish when done properly, but this doesn't tell the story of the problems.

Problem #1 Low flash point solvent based paint.
Problem #2 High flash point solvent based catalyzed varnish
ad these together, and what happens is the paint will wrinkle and/or run.

Solution:
A friend of mine does alot of pinstriping and had suggested that when you thin your paint (use mineral spirits) add just a drop of your catalyst to your thinner (bout 3 oz. of thinner). This is supposed to create a nice marrige to the paint and varnish.


 Well after I tried that I seen a little bit better results, but the problem of runs or wrinkles still happened.
 So then I stuck to my old "global rule" of "go slow, little at a time" which equates to, when spraying your sealant, get a first coat on, but make it very light. If you go heavy it will take to long to dry, and it will have a longer time and chance to burn and bleed the paint.
 Ultimately the best choice is to use a paint with the same base solvents that your sealant/varnish/laquer/etc. has, but when this is not an option (as there are not alot of pro paint stores in this area) catalyst additive to your thinner, and light coats are an alternative.
The next theory I am testing is the use of a heat gun to bake certian solvent based paints after they air dry, then try different spray thicknesses to see if it will eleiminate the paint burning wrinkle/run or if it is just a waste of time. The theory comes from comparison to automotive painting. I have heard the paint is baked on before the clear coating is applied. with out knowing the why or investiving a bunch of time reseaching the chemistry and complete physics of solvents pigment vhicles, and heat, I thought I would do an additional trial and error. if anyone cares to add to this, feel free.

No comments: