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11-05-2007, 11:47 PM
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#1 |
Name: Jim City: Cary State: NC County: Wake Join Date: Oct 2005 Age: 58 Avg Visit Freq/Week
= 6.22 over 180 days |
Perhaps this is too simple a question for most folks but I've only started using BLO.
Can BLO be topped with polyurethane finishes. I'm using the BLO to "pop" the grain, and now want to put a gloss poly over it.
Any problems doing so?
Jim |  
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11-06-2007, 12:02 AM
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#2 | | Webmaster
Director
Name: DaveO City: Clayton State: NC County: Johnston Join Date: Aug 2005 Age: 38 Avg Visit Freq/Week
= 7.00 over 180 days |
YES, BLO is often a component in oil based Polyurethanes. You can definitely topcoat BLO with poly, just make sure that it has fully cured before doing so. Wait until you can't smell it any more, often about 3-4 days.
Dave 
__________________   Nothing left to do but smile, smile, smile
Honestly Honey, that will cost around $100 $150 $200, and I need a few more tools. 
Heard from a client..."If I had your tools and experience...I could do it myself" 
"Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind."
--Dr. Seuss
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11-06-2007, 09:32 AM
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#3 |
Name: Jim City: Cary State: NC County: Wake Join Date: Oct 2005 Age: 58 Avg Visit Freq/Week
= 6.22 over 180 days |
OK, but what about a water based poly over a cured BLO?
Does BLO ever cure to the point where oil and water do mix?
Jim | |
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11-06-2007, 12:01 PM
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#4 |
Name: Jerry City: Salisbury State: NC County: Rowan Join Date: Feb 2006 Avg Visit Freq/Week
= 6.88 over 180 days |
Originally Posted by JRD  Perhaps this is too simple a question for most folks but I've only started using BLO.
Can BLO be topped with polyurethane finishes. I'm using the BLO to "pop" the grain, and now want to put a gloss poly over it.
Any problems doing so?
Jim Jim-----------I use a mixture of BLO, MS, and oil base urethane. It is a 1/3---1/3----1/3 mixture. The MS thins things down for better penetration. Wipe it on and wipe off the excess before it gets tacky. Let it set for 24 hours, lightly sand (220 or higher grit) put on another coat. Keep repeating that cycle until you see the depth of finish you want. I usually get it with 3 to 4 coats.
It works for me.
Jerry
__________________
We make a living by what we get...............We make a life by what we give
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11-06-2007, 01:29 PM
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#5 | | Asst. Webmaster
Name: Bas City: Cary State: NC County: Wake Join Date: Aug 2007 Age: 35 Avg Visit Freq/Week
= 6.96 over 180 days |
Never tried it, but I have done several projects with the mix Jerry described. In theory, a water-based finish over oil should work, just like you can put a latex top coat over an oil-based primer. I have used oil-based stains on oak and pine, and then used a water-based poly for the finish, but stain and BLO is not really comparable.
I suggest trying it out on a piece of scrap.
BTW, I've also applied BLO (thinned) on by itself, then topped with the oil-base poly. There doesn't appear to any difference compared to using the mix, although with the mix the result looks more even and smoother.
Bas. | |
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11-06-2007, 06:34 PM
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#6 |
Name: John Macmaster City: Eastover State: NC County: Cumberland Join Date: Oct 2006 Avg Visit Freq/Week
= 6.84 over 180 days |
Sorry, but I have to ask, cause I don't know. BLO = ?????
__________________
Long ago when men cursed and beat the ground with sticks, it was called witchcraft. Today it's called golf.
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11-06-2007, 06:43 PM
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#7 | | Vice-President
Libraries Administrator
Name: Rob City: Hendersonville State: NC County: Henderson Join Date: Nov 2005 Age: 66 Avg Visit Freq/Week
= 6.84 over 180 days |
John - You need to check out the North Carolina Woodworker Lexicon whenever you run across abbreviations that crop up on the site. It's under the NC WW Info on the Main Menu Bar or the Sliding Menu. HTH....
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Rob  Truths: There is no such thing as a 25 hour day, so why do I keep trying to cram so much into every day so it seems that way!   | |
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11-06-2007, 07:24 PM
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#8 | | Webmaster
Director
Name: DaveO City: Clayton State: NC County: Johnston Join Date: Aug 2005 Age: 38 Avg Visit Freq/Week
= 7.00 over 180 days |
Originally Posted by JRD OK, but what about a water based poly over a cured BLO?
Does BLO ever cure to the point where oil and water do mix?
Jim It better, that is a finish schedule I am planning on using very soon. I have asked that question to many folks and all have told me that an oil-based finish (BLO, stain, etc.) once cured is just fine with a water-based poly topcoat.
Also the manufactures of the water-based poly formulations say that it is a fine combination.
Dave
__________________ Nothing left to do but smile, smile, smile
Honestly Honey, that will cost around $100 $150 $200, and I need a few more tools.
Heard from a client..."If I had your tools and experience...I could do it myself"
"Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind."
--Dr. Seuss
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