woodcore surface preference for best bond strength?

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kungpowd
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woodcore surface preference for best bond strength?

Post by kungpowd »

Just curious as to wether some of you folks have found any serious difference in bond strength with a sanded or planed woodcore surface?
skidesmond
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Post by skidesmond »

I haven't found any difference.
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vinman
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Post by vinman »

Literature says a planed surface leave the pores open to allow the glue to penetrate. Sanding with less than 100 grit destroys the pores and may be less strong.
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MadRussian
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Post by MadRussian »

Vinman wrote:Literature says a planed surface leave the pores open to allow the glue to penetrate. Sanding with less than 100 grit destroys the pores and may be less strong.
After router profiler I will need to make couple light passes with sender. What's the best grit for sandpaper to make final pass?
gozaimaas
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Post by gozaimaas »

I have used 80 grit to finish without issue
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vinman
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Post by vinman »

I use a planer so this is just my opinion based on what I've read. It probably doesn't make a ton if difference.. But if it were me I'd use 100 grit for a finish pass after profiling.

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Richuk
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Post by Richuk »

Found this paper yesterday. I think the answers are fairly complex, but if you assume best practice is a core with a low moisture content, planned and the wood within the core is partly chosen because it is porous, then you should start to optimise your results.

http://www.fpl.fs.fed.us/documnts/pdf20 ... art001.pdf

I would factor in the ramp rate at which the press is ramped through the temperature range at which the epoxy/resin is at its lowest viscosity.
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