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What are they using as an adhesive in Baltic Birch ply?

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Forum topic by TungOil posted 04-24-2017 03:03 AM 872 views 0 times favorited 2 replies Add to Favorites Watch
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TungOil

748 posts in 335 days


04-24-2017 03:03 AM

What ever they are using to bond Baltic Birch plywood together is tougher than carbide! Last year I made a mortising fixture from BB. I ran one edge through the jointer a few times to true it up. I was surprised to see that the brand new set of HSS knives I put in had a deep ridge at every glue line. Two weeks ago I upgraded to a helical head jointer with carbide inserts. Same thing- a few passes on the edge of a piece of BB ply and the inserts are grooved at each glue line. Anyone else have this issue?

-- The optimist says "the glass is half full". The pessimist says "the glass is half empty". The engineer says "the glass is twice as big as it needs to be"


2 replies so far

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canadianchips

2600 posts in 2837 days


#1 posted 04-24-2017 03:07 AM

Common in plywood. Not just baltic birch.Resins dull blades

-- "My mission in life - make everyone smile !"

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HokieKen

4521 posts in 979 days


#2 posted 04-24-2017 11:24 AM

HSS blades in jointers and planers don’t like glues at all. Not just BB and not just your jointer.

-- Kenny, SW VA, Go Hokies!!!

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