Picador Type Drill Grinding Jig Modifications

[Paul FallertParticipant @paulfallert28101]

I have the Picador clone, Sears Craftsman 9-6677, 6* tilt toward wheel.

The link to Graham Meek's fix for tilted pivot is #404, aka quarantined.

I have the 180* stop and adjustable base micrometer-style mod implemented.

Should the drill bit cutting faces be vertical (align with parting line of tray casting) or 11 to 5 ? I noticed that the tray parting vertical line is not 90* to the Horizon (or my own instinct of vertical), but the parting line of course is constant, no matter how you look at or move the face of the bit.

Should a V insert be used to raise the bit above the tray on larger bits, or just a shim to shift the bit toward or away from the pivot axis? Or washers added between the base and compass to shift the axis?

Locating the tip of the bit at 12 on the clock (wheel) seems to deal with getting the grind to 90* to face.

Thanks for any help in locating Graham Meeks fix or for answering my questions. This is one of the best forums.

I am encouraged by how close I'm getting with all of the Forum suggestions and links, except this #404. I have no access to EIM.

Paul

[clogsParticipant @clogs]

doesn't anyone sharpen drills by hand anymore ….?

there's gotta be…..

I have never used a jig in my life, now 71…..

gotta say tho with failing eye sight below 1/8th is getting difficult…

[Thor 🇳🇴Participant @thor]

Posted by Paul Fallert on 10/09/2020 15:13:58:

I have the Picador clone, Sears Craftsman 9-6677, 6* tilt toward wheel.

The link to Graham Meek's fix for tilted pivot is #404, aka quarantined.

I have the 180* stop and adjustable base micrometer-style mod implemented.

Should the drill bit cutting faces be vertical (align with parting line of tray casting) or 11 to 5 ? I noticed that the tray parting vertical line is not 90* to the Horizon (or my own instinct of vertical), but the parting line of course is constant, no matter how you look at or move the face of the bit.

Should a V insert be used to raise the bit above the tray on larger bits, or just a shim to shift the bit toward or away from the pivot axis? Or washers added between the base and compass to shift the axis?

Locating the tip of the bit at 12 on the clock (wheel) seems to deal with getting the grind to 90* to face.

Thanks for any help in locating Graham Meeks fix or for answering my questions. This is one of the best forums.

I am encouraged by how close I'm getting with all of the Forum suggestions and links, except this #404. I have no access to EIM.

Paul

It seems that Gray's article on the modelengineeringwebsite.com has been removed, may be moved to a DVD.

The link to to Gray''s posts on the MEM forum works for me, and should give much the same information. I have sent you a PM.

Thor

[Henry BrownParticipant @henrybrown95529]

Just in case anyone wants to see the instructions from an original Picador box this is from the front of mine…

I really need to make a new foot or modify the existing as there is quite a bit of slop that has developed over the years due to the Picador nameplate wearing and bowing slightly, I tend to compensate for it, another round-tuit jobs!

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