Greetings to the group.

I'm having a problem with 'dimples' appearing in my finish, and wondered what may be causing it.

I did two identical pieces at the same time. The problem only happened on one of the two pieces.

Conditions: Severe clear, 75 degrees outside, finished inside.
I'm brushing fresh oil-based poly over oil-based stain (major manufacturer for both). The first coat went on beautifully. I gave them a light sanding with 220 grit 24 hours later and removed the dust.

The second coat went on fine on the first piece, but on the second, the poly would draw back in some places - imagine a bubble in reverse, about 1/16 to 1/8 inch in diameter. I brushed it back smooth a couple of times, and each time it would draw away again at the same places. Parts of the piece look fine - the 'dimples' are only in some places, and often in clusters.

Sanded again, and the 'craters' remained very obvious in the dust. Note that there were no rims around the edges of the craters, before or after sanding. There are no dents in the wood.

I took a chance that I could get them to fill in using a 50/50 cut of poly. Better, but still there, and no dimples appeared in any other places.

The attached pictures show them fairly well, some better than others, and the negative versions give another idea of them. The forced flash at an angle is intentional, and some pictures had contrast and color adjusted. I got them as small as I could - the originals had better detail, but were 1 to 3 MB. Taken at about 1 foot with Sony Mavica 500

I've sanded back down to where the dimples are gone but a little of the first coat still shows, and will try another coat tomorrow.

I'm curious as to what problem may have been.

Ideas?

On 30 Oct 2008 20:29:40 GMT, Joe invalid wrote:

Greetings to the group.

I'm having a problem with 'dimples' appearing in my finish, and wondered what may be causing it.

I haven't been able to get the photo(s)downloaded/displayed, even with
Agent, but it sure sounds like you've got a case of "fisheye".

This is usually caused by using "silicone" somewhere in your shop that
contaminates the wood:

http://furniturerejuvenation.blogspo...g-fisheye.html


www.e-woodshop.net
Last update: 10/22/08
KarlC@ (the obvious)

On Thu, 30 Oct 2008 15:42:47 -0500, Swingman wrote:
I haven't been able to get the photo(s)downloaded/displayed, even with
Agent, but it sure sounds like you've got a case of "fisheye".

They all had encoding errors for me too. I'm using
Agent 4.0.

I could also not see the pics in Agent, but Photoshop was able to open
all but the two pics number 3.

Resaved the images with photoshop, hope that helps.

A.



On Thu, 30 Oct 2008 17:03:06 -0500, wrote:

On Thu, 30 Oct 2008 15:42:47 -0500, Swingman wrote:
I haven't been able to get the photo(s)downloaded/displayed, even with
Agent, but it sure sounds like you've got a case of "fisheye".

They all had encoding errors for me too. I'm using
Agent 4.0.

wrote

Thank you. That, I can see.