Author Topic: Domino Joint Offset  (Read 1026 times)

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Offline Oso Rojo

  • Posts: 120
Domino Joint Offset
« on: May 20, 2021, 10:42 AM »
I'm building some work tables out of double thickness of 3/4 play and lamination. I'm edge banding with 3/4 oak on the flat and 1.75 tall. This way I have 1/8 on either side to trim flush. I want to use dominos for alignment and ease of glue up. But I need the banding to have a different plate setting than the table top. For discussion let's say I need the table slot at 3/4 down, then the banding slot should be 7/8 down. I'd like these setting to be repeatable.

How do you recommend setting them? I don't think using the scale will be accurate enough. I was thinking of using one of the stops and a feeler gauge like spacer to get my extra 1/8"

Any thoughts for you guys with more experience at this?

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Offline DynaGlide

  • Posts: 1074
Re: Domino Joint Offset
« Reply #1 on: May 20, 2021, 10:50 AM »
Probably the easiest thing to do is do your banding first at a setting that suits you like 3/4", then you could place a long 1/8" shim along your 1.5" ply to register off. That way there's plenty of support for the Domino when you go to do the plywood. The 1/8" shim doesn't need to be small, it could even be pretty wide and clamped in place outside the reach of the Domino.

You could purchase a 1/8" sheet of hardboard from Home Depot/Lowes for this.
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Offline Cheese

  • Posts: 8722
Re: Domino Joint Offset
« Reply #2 on: May 20, 2021, 11:17 AM »
Probably the easiest thing to do is do your banding first at a setting that suits you like 3/4", then you could place a long 1/8" shim along your 1.5" ply to register off. That way there's plenty of support for the Domino when you go to do the plywood. The 1/8" shim doesn't need to be small, it could even be pretty wide and clamped in place outside the reach of the Domino.

You could purchase a 1/8" sheet of hardboard from Home Depot/Lowes for this.

+1

Using a shim/hard stop is the best way to maintain consistency. Do the table tops first, then grab the shim and do the edge banding.


Offline DynaGlide

  • Posts: 1074
Re: Domino Joint Offset
« Reply #3 on: May 20, 2021, 11:27 AM »
Probably the easiest thing to do is do your banding first at a setting that suits you like 3/4", then you could place a long 1/8" shim along your 1.5" ply to register off. That way there's plenty of support for the Domino when you go to do the plywood. The 1/8" shim doesn't need to be small, it could even be pretty wide and clamped in place outside the reach of the Domino.

You could purchase a 1/8" sheet of hardboard from Home Depot/Lowes for this.

+1

Using a shim/hard stop is the best way to maintain consistency. Do the table tops first, then grab the shim and do the edge banding.

I may be wrong because this stuff hurts my head @Cheese but wouldn't you want to shim the table top, and not the edge banding? The shim raises the mortise 1/8" relative to the table top, but when you go to mate it with the edge banding the counter top becomes offset 1/8" down.
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Offline Michael Kellough

  • Posts: 5263
Re: Domino Joint Offset
« Reply #4 on: May 20, 2021, 01:25 PM »
DynaGlide is right, you'd add the shim when cutting the table mortises but in this case I would rip the oak a little narrower to get about 1/16" overhang. Routing off an 1/8" of unsupported wood is asking for a ruinous split.

Should be no problem just setting the fence to different heights. The scale is in mm's. You should be able to set it to half mm's if you want but it won't make a difference if the Domino is a little more to one side of dead center than the other.

Offline ChuckM

  • Posts: 2771
Re: Domino Joint Offset
« Reply #5 on: May 20, 2021, 01:58 PM »
Snip.

Any thoughts for you guys with more experience at this?

I've been using the "shim-on-the-baseplate" method featured in FW #261 June 2017 p. 60 ever since I came across the article. It's the simplest and perfect solution I've ever known or tried. For copyright reasons, I can't produce the exact copy here.

You can check that out to see if it does what you needed.
« Last Edit: May 20, 2021, 02:04 PM by ChuckM »



Offline DynaGlide

  • Posts: 1074
Re: Domino Joint Offset
« Reply #8 on: May 20, 2021, 02:33 PM »
Kind of like the spacer Lamello provides with the Zeta



Apparently Seneca came up with a similar solution with their Domiplate:

« Last Edit: May 20, 2021, 02:37 PM by DynaGlide »
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Offline Oso Rojo

  • Posts: 120
Re: Domino Joint Offset
« Reply #9 on: May 20, 2021, 02:50 PM »
https://www.finewoodworking.com/2017/03/29/get-perfect-reveals-domino

Would that work for you?

Defiantly but I don't know if I'll bother to actually cut one our and affix with tape. I'll likely just cut a square and go with  that. I'll have to look around the shop for some 1/16 stock as someone suggested or go with the full 1/8.

Offline Cheese

  • Posts: 8722
Re: Domino Joint Offset
« Reply #10 on: May 20, 2021, 03:32 PM »
I may be wrong because this stuff hurts my head @Cheese but wouldn't you want to shim the table top, and not the edge banding? The shim raises the mortise 1/8" relative to the table top, but when you go to mate it with the edge banding the counter top becomes offset 1/8" down.

Well that's interesting... [smile]...I missed the double ply thickness detail, so I was clamping down both pieces directly to a table and then using a shim under the Domino for the edge banding.  [tongue]