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How to clamp a compound miter frame???

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Forum topic by Belg1960 posted 03-13-2014 05:29 PM 788 views 0 times favorited 9 replies Add to Favorites Watch
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Belg1960

831 posts in 1811 days


03-13-2014 05:29 PM

Good morning, as some of you know I recently built my niece a frame and bodged a clamping system. Shown at this link.

http://www.workshopaddict.com/forum/...8-12.15.08.jpg
I wonder is there a BETTER way? Preferably without buying some expensive specialty clamps. Any videos would be really great. Thanks Pat

My biggest problem was I could not turn it over because the outside corner braces would then not hold. I had to hope the joints were closed when the glue was dry. I would like to be able to clamp with the money side facing up.

-- ***Pat*** Rookie woodworker looking for an education!!!


9 replies so far

View Shawn Masterson's profile

Shawn Masterson

1262 posts in 694 days


#1 posted 03-14-2014 01:43 AM

I would just pin it together with a 23 gauge pin and let the glue set up

View Woodendeavor's profile

Woodendeavor

228 posts in 1352 days


#2 posted 03-14-2014 11:58 AM

I would glue on some angled blocks parallel to the mitre that would allow my clamps to pull the joint together then cut them off after it was glued. You need something to reinforce the joint, dowel or loose tenon

View BinghamtonEd's profile

BinghamtonEd

1593 posts in 1115 days


#3 posted 03-14-2014 12:37 PM

I agree with the idea to glue on the blocks. Just a tiny dab of glue, then cut them off as close to the good wood as possible, then plane off the rest. Easy.

-- - The mightiest oak in the forest is just a little nut that held its ground.

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basswood

256 posts in 366 days


#4 posted 03-14-2014 12:54 PM

You can also use miter clamps or spring clamps.

This is an article I wrote on them for Old House Journal:

http://www.oldhouseonline.com/tool-review-miter-clamps/

-- http://www.basswoodmodular.com/Tri-Horse-Builder-Plans-p/thbp.htm

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basswood

256 posts in 366 days


#5 posted 03-14-2014 01:04 PM

Here is a photo of crown with the Collins Clamps on a Victorian door casing project. They are handy in the shop as well.

-- http://www.basswoodmodular.com/Tri-Horse-Builder-Plans-p/thbp.htm

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BinghamtonEd

1593 posts in 1115 days


#6 posted 03-14-2014 01:12 PM

Do they leave marks on the wood?

-- - The mightiest oak in the forest is just a little nut that held its ground.

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basswood

256 posts in 366 days


#7 posted 03-15-2014 03:06 AM

I put all of these compound miters together with the Collins Clamps, so only the slightest of marks. Less than an 18 gauge pin.

-- http://www.basswoodmodular.com/Tri-Horse-Builder-Plans-p/thbp.htm

View Bricofleur's profile

Bricofleur

1194 posts in 1939 days


#8 posted 03-16-2014 03:16 PM

Pat, I would spread the glue and rub the two pieces together. You’d be surprised how they will hold. You will have to glue only one corner at a time though, let’s say about one hour delay.

Another option would be using both hotmelt glue and carpenter’s glue. A dab of hotmelt glue in the center of one piece and carpenter’s glue around it. Hand press the joint and the hotmelt glue will hold the joint while the carpenter’s glue will dry out.

I also like the spring clamp option.

Good luck !

Serge

http://atelierdubricoleur.wordpress.com

-- Learn from yesterday, work today and enjoy success tomorrow. -- http://atelierdubricoleur.wordpress.com

View Belg1960's profile

Belg1960

831 posts in 1811 days


#9 posted 03-17-2014 11:11 AM

Guys, thanks for all the suggestions. I’m not sure I want to use the spring clamps as they would leave marks on my mahogany.

-- ***Pat*** Rookie woodworker looking for an education!!!

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