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Anyone know how to stop wood from leaking pitch? i'm stumped.

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Forum topic by ccpenco posted 02-27-2009 09:39 AM 5059 views 0 times favorited 7 replies Add to Favorites Watch
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ccpenco

84 posts in 2850 days


02-27-2009 09:39 AM

Topic tags/keywords: stop pitch leak pitch leak fir pitch fir 600bft waste

hi i’m just wondering if any of you guys know how to stop a wood like fir to stop leaking pitch? Would sealers or boiling make any difference? becuase i have something like 600bft of fir that would be a shame to waste!

thanks


7 replies so far

View HokieMojo's profile

HokieMojo

2103 posts in 3195 days


#1 posted 02-27-2009 04:03 PM

I’ve heard that whatever the highest temperature the wood reaches becomes the temperature that pitch will begin to run the next time. in otherwords, a log cut in 50 degree whether will leak pitch if the temp goes above 50. If it were stored for a season with temperatures in the 90s, then it would no longer leak until it reached 90. If it were dried in a kiln and got up to maybe 130?, then it wouldn’t leak until it hit 130.

I don’t have experience with this, but I’d love to hear someone that could confirm/deny this rumor.

View John Stegall's profile

John Stegall

478 posts in 2983 days


#2 posted 02-27-2009 04:09 PM

Try sealing it with shellac after wiping it down with turpentine (or another solvent).

-- jstegall

View ccpenco's profile

ccpenco

84 posts in 2850 days


#3 posted 02-28-2009 06:18 AM

thanks all. i think i’ll give it a try. as for thing about the highest temperature the wood reaches is the temperature it will leak at, that only applies for when it is still part of a log/ board right? or can you do that on an already finished piece?

View David Freed's profile

David Freed

112 posts in 3134 days


#4 posted 03-01-2009 11:08 PM

I agree with HokieMojo also. Softwood kilns drying construction lumber will reach temps of 220* or more. It dries very fast and also sets the pitch at a temperature that won’t gum up saws or other tools. I would guess that heating a finshed piece would set the pitch, but it could possibly cause other damage, depending how hot you go.

-- David, Southern Indiana

View Craftsman on the lake's profile

Craftsman on the lake

2523 posts in 2904 days


#5 posted 03-02-2009 12:06 AM

When we paint pine we first cover the knots with a product called Bullseye. Otherwise the knots leak and turn paint, especially white paint yellow.

-- The smell of wood, coffee in the cup, the wife let's me do my thing, the lake is peaceful.

View dirtclod's profile

dirtclod

169 posts in 3327 days


#6 posted 03-03-2009 09:05 PM

Your lumber needs to go into a kiln to set the pitch. I think the target temp is 170F. But the operator can fill you in.

-- Wonderful new things are coming! - God

View dougdeg's profile

dougdeg

107 posts in 3237 days


#7 posted 03-16-2009 12:44 AM

Red pine picth will set at 160 degrees, but as said before on the hot sunny side of the house with red pine log sidieng it still runs on hot sunny days, go figure, wood does what wood does, is all that can be said about that.

have a great one.

-- Doug Cedar Log Furniture, www.cedar-stuff.com

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