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Problem with finish.

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Forum topic by Mark posted 12-01-2016 06:08 PM 502 views 0 times favorited 7 replies Add to Favorites Watch
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Mark

864 posts in 1812 days


12-01-2016 06:08 PM

Morning all. 1st. Please excuse the crummy pics. best I could do on short notice. Pictures are of a Cherry hollow form I’ve just finished. Sanded to 1000 G and 3 coats of DIY WOP (gloss varnish cut 50/50 with thinner. Most of the piece took the finish well as I expected it ,to but right where the little knot is, an inch or so on each side and almost the full length of the piece on the one side, it’s like a sponge when applying the WOP. I’ve applied at least 4 extra coats in this area alone, as well as dabbed it with some of the finish on my finger and it just soaked right in. The inside in this area doesn’t feel wet, so I dunno. I have a can of straight gloss varnish that hasn’t sealed so well and is getting kind thick. I applied a bit last night to the offending area and it’s starting to seal up. I’m thinking’ very porous end grain from the knot???? The wood was a BIT punk in this area. Any thoughts? Whatcha think?
Thank you.

-- Mark


7 replies so far

View Druid's profile

Druid

1664 posts in 2633 days


#1 posted 12-01-2016 08:00 PM

Mark, first thing I’ll say is that this looks like a well crafted piece with interesting character. Based on your comment that it’s starting to seal up, it sounds like you are solving the problem. Otherwise, I would suggest try a Wood Hardener on “softer” areas such as this (before getting to the final finishing) if you have this happen again. Just a thought.
It does look like you’ll have a winner when you are done.

-- John, British Columbia, Canada

View Wildwood's profile

Wildwood

2186 posts in 1972 days


#2 posted 12-01-2016 08:29 PM

I would try 60/40 (60% finish/ 40% solvent-thinner) mix in that area or go full strength with finish in that area.

Whether use a mix or full strength idea is apply light coats getting a build up of finish that area.

Good luck with it!

-- Bill

View OSU55's profile

OSU55

1425 posts in 1827 days


#3 posted 12-01-2016 08:32 PM

Use your 50/50 finish with a brush and soak the soft area and keep at it until it stops. Wet the whole piece down for several minutes, then wipe the finish off. Use straight finish on the soft area if you want. Poly thinned 1:1 is about like Danish oil oil – keep wet for 5-20 minutes, then wipe off.

View RogerM's profile

RogerM

786 posts in 2237 days


#4 posted 12-02-2016 02:13 AM

Seal it up with a coat of Seal Coat (dilute shellac) then put on the poly

-- Roger M, Aiken, SC

View Bob Collins's profile

Bob Collins

2471 posts in 3521 days


#5 posted 12-02-2016 06:49 AM

Your getting good advice with the above Mark, no need for me to confuse you. Nice piece of turning.

-- Bob C, Australia. Your best teacher is your last mistake.

View Rick_M's profile

Rick_M

10634 posts in 2218 days


#6 posted 12-02-2016 08:41 AM

Knots are end grain so they will be more absorbent. In the future apply finish to them with a brush (or dab it on) to seal, sand smooth, then apply your overall finish.

-- http://thewoodknack.blogspot.com/

View Mark's profile

Mark

864 posts in 1812 days


#7 posted 12-02-2016 07:44 PM

Thanks for all the tips gents. I’ll try the 50/50 with a brush first.

-- Mark

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