Deeper mortises with the current Domino

[fshanno]

How about a longer bit for the Domino?  I haven't worked out the math but here's the general idea.  Make a bit that could deepen the mortise made with one of the current bits.  The simplest approach would be to make the initial mortise on the wide setting with the standard bit.  Then install the new long bit and set the width back to narrow.  Re-plunge and deepen the mortise.  The length of the longer bit, the width settings and plunge depths could be tuned to provide perhaps a 50 millimeter depth.  The machine wouldn't have to be altered at all.

In theory this system could create very deep mortises.  70mm wouldn't be impossible.  Naturally, for such deep mortises the initial mortise would have to be composed of multiple offset plunges. 

A little extra care would need to be taken because a spinning bit would protrude from the machine.  But a spinning bit protrudes from a drill and a router so we're used to that.

 

[mouppe]

Funnily enough, just this afternoon I converted my domino to make shallower mortises!

These Brusso drawer pulls are only 3/8" thick, and I wanted to use my Domino instead of a router to mortise the holes. I used double-sided tape to stick some 1/4" MDF to the Domino and set the Domino to the shortest mortise setting.

With the Domino face plate resting on the top of the chest, I am guaranteed a mortise parallel to the top. In three plunges, I can quickly cut an accurate horizontal slot. Then I lower the height by 4mm or so and mortise another row of overlapping slots. I continue with a third row until I am close to my line, and then I finish the mortise with a chisel.

Using the Domino instead of a router offers several advantages in this situation. The cut is controllable and predictable, I do not have to move the (very heavy) chest on to its side, and the setup is really easy. The visibility is also better than with a router.

P.S. The colour of the chest is a work-in-progress!

[attachthumb=#]

 

[upscale]

Using the Domino instead of a router offers several advantages in this situation. The cut is controllable and predictable, I do not have to move the (very heavy) chest on to its side, and the setup is really easy. The visibility is also better than with a router.

You cut your mortise by making overlapping holes.  Negating registration points or paddles, I'm led to ask the question. I'm wondering if anyone has tried cutting mortises by moving their Domino sideways? Dangerous? Awkward? Someone must have tried it.

 

[Deansocial]

Using the Domino instead of a router offers several advantages in this situation. The cut is controllable and predictable, I do not have to move the (very heavy) chest on to its side, and the setup is really easy. The visibility is also better than with a router.

You cut your mortise by making overlapping holes.  Negating registration points or paddles, I'm led to ask the question. I'm wondering if anyone has tried cutting mortises by moving their Domino sideways? Dangerous? Awkward? Someone must have tried it.

i would say the bit would snap.

 

[upscale]

I would say the bit would snap.

You're probably right. Upon consideration, the bit is sharpened to cut on insertion. There's no cutting edge for moving it sideways. Just a dumb question. Let me exit gracefully.  :

 

[mouppe]

I think there is very little danger in having the bit snap if you plunge in a different place each time. Only the edges of the mortises overlap. I wasn't moving the Domino sideways whilst routing. It was more a case of plunge, withdraw, move along, plunge, withdraw, move along etc.

 

[greg mann]

There is no reason to not overlap Domino cuts to get what you want as long as you always plunge to do the actual cutting. The bits are designed to end cut and nibble with the small chamfers on the corners. In reality, when we plunge the tool we are end cutting and side cutting at the same time. The important thing to remember is the side cuttig is limited to about 1mm or less in depth as the tool oscillates. This is why we can hand hold the tool so easily.

I know this is the same thing Richard was saying but typing it all out was more fun than typing: +1  ;D

 

[fshanno]

I sent an email to CMT about this.  As everyone probably knows, CMT sells Domino bits.  It's not likely that Festool would be interested in this wish list item because they are already addressing the need with the new XL.  So I thought I'd give CMT a try.