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High Gear 12-05-2010 10:59 AM

Wood trim finishing problems
I am using Mini-wax polycrylic water based on new hickory trim( whole basement remodel ).

I am using foam brushes.

I am finding uneven surfaces and bubbles marks at times .

Basement temps are 64 f where I'm finishing the wood at.

I have a lot of wood to do and need to find the right technics.

spraygunn 12-05-2010 01:40 PM

Hey Gear,

Gotta tell ya, I’ve never used foam brushes, however I’ve heard positive reports from others. Question: Did you stir or shake the polycrylic? And what specie of wood are you applying it on?


mark942 12-05-2010 02:32 PM

Air Bubbles can form in a foam brush application. Personally I would use a good quality Purdy brush. Also as commented by Steve, I would make sure the can had been STIRRED very well. You also might want to look at a mini roller and roll on as much as you can on your Hickory trim, then back brush to level out. This would be more along the lines of production painting.

Good Luck.

High Gear 12-05-2010 05:11 PM

After some sanding/cussin ect , yeah I'm blaming the lions share on air

encapsulated in the foam brush.

I got out my Purdy brush and things are looking much better , then I see its

recommended so maybe .

Maybe in the right hands a foam brush is OK but I don't like them , don't

seem like much control, had to give it a try as some seem to like them..

Yeah I know better than to shake the can and am stirring it a good while.

I picked up some 220.320 and 600 paper and have #0000 steel wool for

the final buff.

No experience with waterbased poly and has been yrs since I played with

the oil based (and I seem to remember no problems then).

It seems to raise the grain on the first coat ( water based ) so a light

dusting with 220 I think then step it down (finer, grit wise ) on the next

two coats.

Does it seem like I'm on the right track ?

oh'mike 12-05-2010 06:19 PM

I find that I get the best results with trim by laying on a fairly heavy coat-then quickly even out the finish with the brush--it seems to level itself out that way.

High Gear 12-06-2010 08:38 PM

OK thanks for the tips guys things are looking tremendously better.

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