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- From: gph@hpcc01.corp.hp.com (G. Paul Houtz)
- Date: Thu, 21 Jan 1993 22:13:46 GMT
- Subject: Re: Need dado insert for old Rockwell table saw
- Message-ID: <4320151@hpcc01.corp.hp.com>
- Organization: the HP Corporate notes server
- Path: sparky!uunet!usc!sdd.hp.com!hpscit.sc.hp.com!hplextra!hpcc05!hpcc01!gph
- Newsgroups: rec.woodworking
- References: <1993Jan18.202502.23119@astroatc.uucp>
- Lines: 47
-
- billn@hpcvaac.cv.hp.com (bill nelson) writes:
- >smb@research.att.com (Steven Bellovin) writes:
- >: In article <4890256@hpnmdla.sr.hp.com>, pauls@hpnmdla.sr.hp.com (Paul Stafford) writes:
- >: > I suppose you could make one, without too much trouble, by cutting the
- >: > proper outline on a bandsaw, and then raising the dado up through it while
- >: > cutting. this has the advantage over store bought of having a perfectly
- >: > tight fit around the blade. Beisemyer makes blanks for several saw styles,
- >: > if you want a store-bought one.
- >:
- >: That's not always feasbile. On my father's Craftsman saw -- over 35
- >: years old, and still purring -- the throat plate is (as I recall) 1/8"
- >: steel. That's very thin for a home-made wood version, especially since
- >: most (all?) of the support is at the ends, not at the sides.
- >
- >It shouldn't really be a problem. There should be very little pressure on
- >the plate. The only time I would expect a problem was if you were ripping
- >very short pieces of stock - like maybe 6 inches long. Even then, if you
- >set up hold-downs properly, there will not be enough pressure on the plate
- >to cause any noticeable deflection.
- >----------
-
- I have to disagree here.
-
- If you want to use your dado head to cut finger joints, then this will
- be a BIG problem. You see, as you push the work into the dado head,
- it has a tendency to push the work into the throat plate, giving you
- different depths depending on how hard you hold the work with your
- hands, a VERY undesireable situation. The only way to get even joints
- this way is to have an extremely stiff throat plate.
-
- I made a lot of finger joints on my Delta Contractor's saw, and I
- used stiff plastic inserts sold by Woodworker's Supply, and they were
- way too flimsy. I ended up throwing them away and buying the steel one
- made for my saw. IT gave me good, even finger joints.
-
- Of course, you can cut your finger joints on the router instead, as many
- people will undoubtedly point out, but I prefer the speed and ease of
- a dado blade on my table saw.
-
- Note: If this is as thick as the throat plate was, and it wasn't reinforced
- with any "webbing" at the bottom, I doubt it would ever have been
- very usable for this application. Even 3/16" steel will flex
- enough to give sloppy finger joints if it isn't reinforced
- underneath.
-
- I guess this is just another reason why a saw is not a saw is not a saw,
- even if the motor runs good.
-