Minimum stock thickness for 45° mitres

D

dance

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Jul 17, 2011
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Hullo!

I am making a silverware drawer insert (cutlery insert in British English) and have created some mitred 45° angles for where the sides meet. My stock is 9mm thick. I am using the 4mm cutter. Even so, I'm having problems.

The cutter cuts all the way through on such thin stock.

Any tips for avoiding this? Is this out of the reach of what the Domino can do? I thought maybe using a space block might help?

Otherwise I'm going to have a nightmarish time of it glueing them up. I was relying on the Doms to hold everything in alignment...

THANKS!
 
You need to mortise off-centre ie closer to the inside edge of the corner. Reference off the outside face as usual but your mortise should be below the stock midpoint.

Sorry if my explanation is poor! Here's a drawing.

1825b468-2450-0d03.jpg
 
Thanks Ken.

Another alternative came to mind. At present, your domino is set to 20mm plunge depth, resulting in a 10mm mortise in each piece of wood.

You could set the plunge depth to 15mm, which would result in 5mm mortises on each side (or 18mm and an 8mm mortise). Then you would have to saw the domino tenons in half. This has the advantage of allowing you to plunge on the centre line.

I have used both methods in the past. Both work fine.

Richard.
 
Hi guys

Get the feeling I must be doing something wrong because I *think* I already tried what you've suggested and it did not work. The cutter cut straight through my practice piece of pine!

Problem is even with the fence depth scale set to '0', I can't seem to put the mortice close enough to the inside edge for it NOT to penetrate out the outside face of the piece.

When I use the lowest setting ('12'?) on the plunge depth scale I can achieve a 2mm mortice which doesn't cut right through to the outside face. Otherwise, no dice.

Have you both definitely tried this for 9mm 45° mitres? I'm sorry to question you on this but I though I'd tried this in lots of different combinations with no success this afternoon.

Settings:

- using the smallest cutter (4mm)
- plunge setting - I tried on 20mm as the manual suggests for the 4mm cutter - cut right through.
- fence depth setting - initially I tried this at 9mm, cut right through. Manual suggests cutting close to the inside corner. Tried with fence at '0'. Better, but still cut through.
- Fence angle - 45°.

Any help MUCH appreciated, would love to have another pop at this tomorrow and get it right.

Thanks
 
Richard Leon said:
Reference off the outside face as usual
Click to expand...

Hmmm - I wonder if this is where I'm going wrong, as I think I'm referencing off the inside face. How would I reference from the outside face with a 45° mitre? Surely this would neccessitate putting the Domino in a position it can't go into? Could I be cheeky and ask for one of your wonderful hand drawn diagrams? I would owe you a virtual beer...
 
It's a little counterintuitive but you reference off the BOTTOM of the domino. The fence is set at 90 degrees.

Excuse the picture but I am in the car and was stuck in traffic for only a minute!!!

4ac6a4c0-4369-bc00.jpg
 
[big grin] [eek]
This has to be a first!  Posting while driving (and stuck in traffic), with pictures.
 
Personally I think the half length Dominos would be better. It would keep the stock thickness from getting too thin on one side of the piece. If this were being mortised off center how much stock could be left on one side? 2mm or less? Seems risky.

Seth
 
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