Wishbone Drill Sharpener

Advert

New Replies

Report Bug

Help/FAQs

Wishbone Drill Sharpener

This topic has 18 replies, 9 voices, and was last updated 15 January 2021 at 15:28 by mechman48.

Viewing 19 posts - 1 through 19 (of 19 total)

Author

Posts
11 July 2016 at 07:56 #246186
Phil P
Participant
@philp
I have been after one of these for ages, and have just managed to find one.

However the little drill setting fixture is missing from the set, does anyone happen to have one they could measure up for me so I can make one.

It is shown in fig 3 of the instruction sheet.

**LINK**

I could work it out, but thought I would ask first.

Thanks

Phil
Advert

11 July 2016 at 07:56 #18141
Phil P
Participant
@philp
11 July 2016 at 09:04 #246198
Bazyle
Participant
@bazyle
Set the drill so the arm is parallel to the stone. If you need a jig the set point just needs to be at the level of the wheel.
11 July 2016 at 10:34 #246205
Ady1
Participant
@ady1
Looks very handy for those teeny weeny drills
11 July 2016 at 11:15 #246211
roy entwistle
Participant
@royentwistle24699
Ady1 It is
11 July 2016 at 11:19 #246213
Phil P
Participant
@philp
In the picture it looks to me as if the drill extends further than that required to make the frame parallel to the stone.

I will wait till it arrives and take some measurement I think.

Thanks

Phil
11 July 2016 at 11:43 #246221
Neil Wyatt
Moderator
@neilwyatt
We will have a nice design (with usage guide) in the next MEW.

Neil
11 July 2016 at 11:56 #246224
Roderick Jenkins
Participant
@roderickjenkins93242
Here you are, Phil. As measured from mine in imperial [metric].

Cheers,

Rod
11 July 2016 at 12:54 #246227
Phil P
Participant
@philp
Hi Rod

That is exactly what I was after, thanks for taking the trouble.

Just out of curiosity, when the drill is in position is the wishbone frame dead parallel to the stone as was suggested earlier ?

Or to put it another way, does the outside of the wishbone have an angle of 118°. The 25° angle of the jig suggests a wishbone angle of 130°

Thanks

Phil

Edited By Phil P on 11/07/2016 13:03:36

Edited By Phil P on 11/07/2016 13:05:02
11 July 2016 at 13:45 #246235
Bazyle
Participant
@bazyle
Good point, I assumed the wishbone was reflecting the desired angle but of course there is the point that not all drills have the same point. Never thought to measure it. I must make a jig myself and resharpen a few drills then.
11 July 2016 at 16:30 #246252
Roderick Jenkins
Participant
@roderickjenkins93242
The gauge rests against the arm:

whereas the drill angle depends on the the projection of the wheel:

Getting close to 118 degrees – looks like I could have opened the gauge out a little more judging by the LH wheel. Anyway, according to Tubal Cain in "Drills, Taps and Dies", the angle is not that critical.

HTH,

Rod
11 July 2016 at 16:57 #246256
Neil Wyatt
Moderator
@neilwyatt
You put the relief on by leaning the holder to one side so it's all a 'by feel' operation anyway.

Neil
13 July 2016 at 12:58 #246511
Phil P
Participant
@philp
Bazyle

My wishbone sharpener arrived at work today, and just out of curiosity I borrowed a vernier protractor to measure the frame angle.

Guess what……..It is 118°, so you were indeed correct about having it parallel to the stone.

The bonus was that the little jig the seller told me was missing, was actually wrapped up inside the instruction sheet, so I don't even need to make one of those now either.

I will give it a try out this evening when I get home from work.

Phil
15 January 2021 at 13:29 #519961
mechman48
Participant
@mechman48
Phil P… 'My wishbone sharpener arrived at work today, and just out of curiosity I borrowed a vernier protractor to measure the frame angle.

Have looked on eBay for this sharpener but nothing like it appears apart from the 'Picador' 'Spiralax' type, can you provide a link for this 'Wishbone sharpener'

TIA
George
15 January 2021 at 13:32 #519962
Oldiron
Participant
@oldiron
A description of the Wishbon 2 and some usage instructions Here

regards
15 January 2021 at 13:45 #519963
Clive Brown 1
Participant
@clivebrown1
There was an article on making and using a wishbone sharpening jig in MEW, April 2004.
15 January 2021 at 13:49 #519964
mechman48
Participant
@mechman48
Posted by Oldiron on 15/01/2021 13:32:35:

A description of the Wishbon 2 and some usage instructions Here

regards

Seen this; link to purchase doesn't 'open Link', have sent pm to originator for updated link.. I seem to recall a long while back there was an article in MEW on construction of this. with drawings.Will trawl through back index .

George.
15 January 2021 at 14:48 #519974
mechman48
Participant
@mechman48
Have found it; issue 251, the problem is that Adobe flash is not supported any longer & I cannot open digital issue to retrieve dwgs. This is a flaming nuisance! Is MTM going to address this point?. My renewal is due soon, am I to no linger to be able to access long time back digital issues, if so what is the point of renewing subscriptions if I can no longer refer to back issues. Can moderators look into this?. Does anyone have access to issue 251 & possibley down load article & forward via mail.

George.
15 January 2021 at 15:28 #519991
mechman48
Participant
@mechman48
Sorted, have to go through 'Pocket mags' web site, sign in to registered MEW a/c then can access digi back issues; convoluted way of going about it !

George.
Author

Posts