Macson 18" shaper
#12
Yep with this one I will need to lock the clapper as there would be no down force at all with this geometry other than the top-rake of the tool, which I believe is best kept to a minimum. Another option is to turn the bar over and cut the slot / keyway in the top of the bore- still no clapper action obviously.
With the first type of slotting tool, there's a good diagram in the USN Repairman's manual showing the need to have the vertical bar as long as the horizontal part so that the force closes, rather than opens, the clapper. I think this introduces way too much flex which results in digging-in.
I have read about shapers fitted with mechanical clappers that are opened and closed positively, would be interesting to rig something up to do this.

Stan, that grinding wheel (or is it a millstone?) is not what I was expecting!
Lathe (n); a machine tool used in the production of milling machine components.

Milling Machine (n); a machine tool used in the production of lathe components.
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Messages In This Thread
Macson 18" shaper - by Pete O - 09-21-2016, 02:41 AM
RE: Macson 18" shaper - by pepi - 09-21-2016, 06:59 AM
RE: Macson 18" shaper - by Dr Stan - 09-21-2016, 09:36 AM
RE: Macson 18" shaper - by Mike E. - 09-21-2016, 12:33 PM
RE: Macson 18" shaper - by Dr Stan - 09-21-2016, 03:00 PM
RE: Macson 18" shaper - by Pete O - 09-21-2016, 07:03 PM
RE: Macson 18" shaper - by ieezitin - 09-22-2016, 05:33 PM
RE: Macson 18" shaper - by Sunset Machine - 09-28-2016, 09:17 AM
RE: Macson 18" shaper - by Dr Stan - 09-28-2016, 09:57 AM
RE: Macson 18" shaper - by Sunset Machine - 09-29-2016, 08:25 AM
RE: Macson 18" shaper - by Pete O - 09-27-2016, 11:07 PM
RE: Macson 18" shaper - by f350ca - 09-28-2016, 10:01 AM
RE: Macson 18" shaper - by Pete O - 09-28-2016, 06:28 PM
RE: Macson 18" shaper - by Pete O - 09-30-2016, 07:19 AM
RE: Macson 18" shaper - by Dr Stan - 09-30-2016, 04:38 PM
RE: Macson 18" shaper - by Sunset Machine - 10-01-2016, 08:40 AM
RE: Macson 18" shaper - by Roadracer_Al - 10-02-2016, 11:41 AM



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