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"cross center" clamping jig ??

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Forum topic by mjpierson posted 03-08-2009 04:44 AM 1034 views 0 times favorited 5 replies Add to Favorites Watch
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mjpierson

86 posts in 3458 days


03-08-2009 04:44 AM

Topic tags/keywords: jig question

anyone seen or have any ideas on how best to clamp up the centers of crosses like the one in the link. I usually am able to cobble them together, but every time i swear there has got to be a better way. it is essentially four miters coming together….is there some like the picture frame jigs out there?

http://lumberjocks.com/projects/14854

-- Mike - Columbus, Ohio


5 replies so far

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DaleM

952 posts in 2849 days


#1 posted 03-08-2009 05:19 AM

Mike, I don’t know if you tried this, but you could try to rout down about 1/2 or or more into a larger piece of wood, making a cross the exact width of the cross you are making. You can then lay a piece of wax paper on top of it to keep your cross from getting glued to it, push the pieces of your glued cross in then clamp the cross from top to bottom and left to right. The routed out template will ensure the pieces line up right if the template is tight enough. Just a thought if you haven’t tried something like that yet.

-- Dale Manning, Carthage, NY

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TopamaxSurvivor

17671 posts in 3141 days


#2 posted 03-08-2009 05:25 AM

Well, it would be a lot more work, but I suppose you could lap joint them, You would have to inlet the riser with the 45 angles. I’d leave them a bit slopped by a couple degrees going down into the lap joist. Then, cut the 2 cross arm pieces with their 45’s. Relieve the back side for the lap joint and leave a couple degress of relief where the pieces meet. With that little bit of angle, they should sort of be self filling in the joint like inletting a rifle stock’s metal pieces.

-- Bob in WW ~ "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

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John in SD

140 posts in 3278 days


#3 posted 03-08-2009 05:40 AM

Mike, Have tried using wedges to clamp it?
John

-- Life used to be soooo much simpler!!!!

View Francisco Luna's profile

Francisco Luna

939 posts in 2859 days


#4 posted 03-08-2009 05:50 AM

http://www.leevalley.com/wood/page.aspx?c=2&p=31160&cat=1,43838

-- Nature is my manifestation of God. I go to nature every day for inspiration in the day's work. I follow in building the principles which nature has used in its domain" Frank Lloyd Wright

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TopamaxSurvivor

17671 posts in 3141 days


#5 posted 03-08-2009 06:57 AM

I like the splines, that would be a lot easier than inletting a lap joint. A tiny bit of relief would make the joint almost invisible if it weren’t for the change of direction on the grain.

-- Bob in WW ~ "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

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