Biscuit jointing edge of plywood?

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Blog entry by ocwoodworker posted 10-18-2010 12:41 AM 8057 reads 0 times favorited 5 comments Add to Favorites Watch

I know that biscuits do not add ‘real’ value to edge to edge joints (but times it just feels right). What about jointing edge of plywood if you want to make a walnut edge? I’m concerned that the edge grain of the plywood would soak up all the glue and starve the joint? Do any of y’all use biscuits in this condition?

-- I'd like to believe Murphy's Law haunts my woodshop, because if it's Karma it would mean I had something to do with it. - K.R.

5 comments so far

View Sawdust4Blood's profile


405 posts in 3049 days

#1 posted 10-18-2010 01:03 AM

I thought my biscuit joiner was the coolest thing when I first got it. Nowadays putting a solid wood edge to plywood and attaching face frames to plywood cabinets is the one place that it still sees common use.

-- Greg, Severn MD

View FirehouseWoodworking's profile


708 posts in 3300 days

#2 posted 10-18-2010 02:55 AM

I find that using a biscuit joiner is a great aid in aligning edge banding, etc. If I am looking for strength, I revert to dowels or if the joint will not be seen, then pocket screws. But the biscuit joiner still has its place in my shop.

I don’t have a problem with glue starved joints. Just make sure that enough glue is used, a measure of which is the squeeze-out. If you are worried about squeeze-out ruining your finish by sealing the face veneers, then add wide painter’s tape to the face veneers so the glue squeezes out onto the tape where you can wipe it away. I always try to make the edge banding a bit wide so that I can later trim them with a flush bit and router.

-- Dave; Lansing, Kansas

View A10GAC's profile


191 posts in 3105 days

#3 posted 10-18-2010 03:04 AM

Have you considered an edge banding bit set for your router? One cuts a “V” style profile in the plywood and the other cuts the mate into the solid wood of your choice. Some glue, some clamps, no more plywood endgrain.

A quick search turned up this:Click here but I’ve seen them elsewhere as well.

I found this nice little jig for trimming the edge banding after installation as well. “Fine Woodworking Jig

-- Men have become the tools of their tools. - Henry David Thoreau

View lanwater's profile


3111 posts in 2961 days

#4 posted 10-18-2010 07:22 AM

I used biscuits with no problem I do prefer tong and groove for egdging.

-- Abbas, Castro Valley, CA

View SPHinTampa's profile


567 posts in 3713 days

#5 posted 10-18-2010 01:36 PM

An issue of FWW (i will go back a look for the issue) suggested putting a thin layer of glue along the edge of plywood and allowing it to dry first (pre sizing) and then re applying a second layer afterwords to avoid joint glue starvation.

-- Shawn, I ask in order to learn

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