Mitered moldings - biscut, spline, spring clamps, other...?

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Forum topic by skozub posted 03-08-2008 09:07 PM 1102 views 0 times favorited 1 reply Add to Favorites Watch
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59 posts in 3726 days

03-08-2008 09:07 PM

I’m putting a larger cove molding on a piece for a client that will need mitered returns. I’ll assemble the crown together before I attach it to the piece by using a glue-up jig that helps ensure the mitered joints come together at a 90 degree corner. The set up is a piece of MDF with a two pieces of wood at the corners that give me a perfect 90 degree angle…I put the crown upside down and butt the top pieces together inside of this corner to form a perfect connection. However, what to do once that glue is on…as we know, that stuff makes to a bit slippery so without added holding power I’m fearful it will slide around on me.

I’ve toyed with using the biscuit jointer to help line them up but b/c of the angle I’ve had a hard time getting them to line up the way I’d hoped.

I can set up the table saw on a 45 and cut a grove in both pieces then use a spline to help with alignment.

or I could use a pair of spring miter clamps.

I made a pair of ogee bracket feet a while back and had the pleasure of using a set of Ulmia Spring Miter clamps when I lived in Denver; but now I’m on my own and need a more affordable option (I think the set is ~$175)

Does anyone have suggestions on the best approach here?
Are spring miter clamps a worthwhile investment? I found some from Collins Tool company that are more reasonably priced…but it’s a specialty tool that might not show its face but a few times a year (is that worth it). Any one have an opinion on the spring clamps and the various options?




1 reply so far

View Al Killian's profile

Al Killian

273 posts in 3720 days

#1 posted 03-10-2008 12:19 AM

I would rather put it together on the peice. This would allow the mold to set flush to the peice. Biscuits will work for the corners to help keep it together.

-- Owner of custom millwork shop

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