You will get mixed opinions on mortising machines / mortising attachments
vs. routers or good old chisels.
I started my woodworking hobby with a mortising attachment for a craftsman
drill press. It worked ok, but in my opinion, the drill press quill had too
much slop to make straight, reliable mortises. (Perhaps a higher quality
drill press would not have this porblem.) Also, hollow chisel mortisers
require a tremendous amount of force to push into the wood. In my opionion,
the gearing ratio on a drill press is a little too high for this operation
and you need to crank down on the drill press handle pretty hard, with the
bigger bits. A dedicated mortiser ussually has more mechanical advantage,
and a LONG handle.

I eventually sold the attachment on ebay and bought a dedicated mortiser. I
love this thing! It makes great cuts, is very quick to setup and is alway
sitting there ready to go. It cost about $180 or something though (I can't
remember.)
I have the Delta version, and I made a few mods to it to improve the work
holding. See here for details:
http://www.the-wildings.com/shop/jig...iser_table.jpg

Router table make very nice mportises too, but the mortise ends are rounded
(Which you can quickly fix with a chisel) and in my opinion, they take a
little longer to set up.

My $0.02

--
Joe in Denver
my woodworking website:
http://www.the-wildings.com/shop/





wrote in message
...
I'm considering buying a DP mortising jig.

http://www.canadiantire.ca/assortmen...rtment=primary
Does anyone have experience using one. The price at Canadian Tire is
$50 reg $80. I own a good Dewalt 621 plunge router and a freud table
top and fence. Would I be better of using my router with a good
mortising bit.

Any comments would be appreciated.

Regards Mark