Swingman, a few weeks ago you were asking how well the Domino could
elongate a mortise. Your concern was whether the hole would be ragged.
My answer the hole would not be ragged.
Here is an 8mm wide mortise by approximately 2" long. I placed a center
plunge and followed left and right from center to get 2" wide.
This is through MDO with Fir inner plys, 3/4" thick.
This is the through cut on the bottom side. I used no backer to prevent
tear out on the exit side.
J.Clark, Just something else that I do with the Domino. This is a
counter sunk slot to accept a 5/16" bolt and washer. I need for the
bolt to slide in the slot. The bolt/bolts will attach this and another
75" long piece to the head and foot boards on the bed that I am
Pretty much impossible on a traditional mortiser as the piece is
approximately 18" x 75". This is at the end of the 75". A router jig
probably would have been a little quicker but I would have had to build
a jig. ;~)
On Friday, September 30, 2016 at 12:02:49 PM UTC-4, Leon wrote:
Having no clue how the device works, this may be a dumb question:
How hard would it be to do shallow cuts from both sides and have everything
line up perfectly?
Obviously (?) a backer board would be easier, I'm just curious about
the ability to perfectly line up 2 "opposing" cuts.
If you have or have used a DwWalt, PC, or similar biscuit joiner you
pretty much know how the Domino works. Instead of plunging a spinning
blade the Domino plunges a spinning and oscillating bit. The results of
the cut however are much much much more accurately placed and clean cut.
Not hard at all assuming the Domino is always in perfect registration in
regards to left and right oscillation of the bit. The face of the
Domino has indexing pins and in a perfect world the bit will cut
perfectly in the center between them. One of two pins is adjustable but
since the vast majority of my cuts do not exit on the opposite side I do
not depend on the indexing pins.
Concerning the alignment of the mortise from the edge on both sides
there is no problem at all. The tricky part would be the alignment of
one end of the mortise to the other end, FOR PERFECTION.
When using the Domino as intended I use a perfect sized mortise on the
end grain and the slightly longer mortise setting on the mating edge.
On Friday, September 30, 2016 at 4:44:16 PM UTC-4, Leon wrote:
Yeah, after I posted I Googled the Domino and figured it out. It's a
little scary watching that bit spin and move back and forth in that open
space. I'll have to remember not to wear my favorite string tie if I get a
chance to use one of those machines. ;-)
BTW that site was where I came across the video of the guy staining the
edge of the stile after assembly. He was singing the praises of the Domino
in the video. Just prior to the 2:00 staining incident, he mentioned that
he did 85 tenons in about 1.5 hours.
Yeah don't do that. LOL. With the smaller Domino, mine, I have had
plenty of opportunity to hurt myself and have not once. ;~)
Yeah? He was going a little slow, that is a mortise about every 2
minutes. But if he was counting time to mark locations and clamp the
work that might be about right. Remember there are two cut/mortises for
each tenon, so 170 mortises. With a traditional mortiser that may have
been closer to a couple of days.
It's very easy. You can use the built in stops to set the mortise a
fixed distance from an edge or another mortise, you can line up on a
pencil mark (the mark doesn't have to the center--the fence has
graduation marks and three triangular windows for that purpose), or you
can use a stop block. Those are methods that occur to me off the top of
my head. I'm sure there are others.
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