|Forum topic by JMB||posted 03-25-2009 06:10 AM||9253 views||0 times favorited||6 replies|
03-25-2009 06:10 AM
Once again, I’m not certain this is the proper category for this. Perhaps we ought to lobby the Website administrators to create a “HELP?” category in the forum topic list.
I’m trying to do a finish coat on a small woodworking piece. I am getting a lot of crackling in the finish. Can’t seem to eliminate it.
Object is made from Poplar
Primer coat is Krylon’s white primer, sanded and re-coated 2 + times until completely smooth no grain whatsoever
Paint is two + layers of Krylon enamel sanded until absolutely smooth and even color
I’m using a store bought, aerosol spray can, gloss lacquer by Watco for my finish coating. I have used their satin before without any problems.
Here’s where I’m at:
First thing today, I put a second coat of paint on. I allowed it to dry a few hours, then sanded it smooth with 320. I removed the dust and debris with a barely wet rag, allowed the moisture on the surface to dry, then hit it with lacquer. No problems so far.
I let the first coat of lacquer dry for a few more hours then scuff sanded it with 400 grit. I used the barely-moist rag again to remove all dust and debris from sanding, then allowed it to dry for a few moments.
I set it on the spray rack and hit it with the final coat of lacquer, and again with the crackling.
It only does it in spots. I suspect I am not allowing the water to dry long enough. I’ve tried several different approaches to eliminate this crackling effect and no luck.
The only other time I have run into this is when I was a novice and sprayed wayyy to much on at a time. Now I know better and try to spray multiple very light coatings with plenty of dry time in between. I’m not completely eliminating over coating as a factor in this case, but I’m fairly certain its not the cause.
Anyone ever run into this? Please advise. Thanks.
-- If I can't fix it, it wern't broke in the first place!