I'm working on a little project and could use some advice.
I'm building a rectangular 24"x12"x3/4" thick platform out of hardwood
veneered plywood. I want to add a half-round hardwood trim to the
rectangle to give it a nice accent all the way around.
Question: What's a reasonable trim attachment strategy? I can envision
using either a keyway (correct name?), or bicuits, or just carpenter's
glue. Glue alone would not be strong enough though.
Are there other methods that produce nice tight lines and good
Any advice for this newbie is appreciated.
I agree 100%. Most modern PVA type glues (Those designed for woodwork)
are actually stronger than the timber they join. If you do not want to
use clamps to hold the edges in place until the glue grips, Cut the
heads of a couple of pins and drive them in to hold 'em. You can than
punch them just below the surface and fill the holes with an appropriate
wax putty, or alternatively you can secret nail them.
As others have pointed out, glue is plenty strong enough. After much
experimenting with calmps, cauls, nails, etc, to apply trim, I now just
use masking tape to clamp it. No real need for cauls. After applying
the glue to both sides, slide the trim back and forth until it sticks
(i.e. almost a rubbed joint), adjust and clamp it down with a whole
bunch of pieces of tape (one every 3-4 inches or so). You might need to
trim it later with a plane or trim router bit.
Current real email is my first name in lower case while the domain is
You do not need a "keyway" on plywood. Yellow glue alone is enough to
hold the trim. As others suggested you can brad nail or pin nail the
trim until glue dries. If you do not want nails, you can glue up with
cauls.Bore holes in scrap 2x material the same diameter as the half
round.If you forstner bits use them, they cut cleaner.Rip in half, now
you have half round caul with a square edge for clamps. Do all
finishing on plywood first before glueup of trim. This way you can
clean any glue spillage with a damp sponge. I'm assuming you will put
on a clear top coat.
Temporarily tape the glued trim to the plywood ,tape one caul to
plywood , add caul on opposite side and clamp up. Figure on more clamps
and cauls than you may need.I would imagine 6" centers at most.Make
sure the top edge is even or slightly proud of the plywood. If top edge
is a hair above you won't see it, if the plywood edge shows at all, it
stands out like a sore thumb.
Another tip. When banding w/hardwood I always run the band a little
proud of the top and use a scraper to bring the band down flush with
the veneer after the glue dries. Then a light sanding to finish the
job. If you are unfamiliar with scrapers this is an excellent way to
learn how to use them. One of the rare places I do manual in favor of
machine. I have burned through the veneer too many times with a power
sander and have never mused when using a scraper. I never tried it with
ahalfdd round but it should be OK if you run it about 1/32 proud and
finish it iou with sand paper after scraping.
Also, I often use tape in lieu of clamps but be carefull with grains
that might pull up, like mahagony or oak.
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