Try the google search box on the home page.

Neil

… Very strange

Copyright issues aside : They are selling 001-163, but illustrating with pictures of later covers.

MichaelG.

Hi Dave,

Drop John Moran an Email, he is very helpful. I've built the 4-6 facet drill sharpener and I'm very happy with it. I also made a jig to sharpen slot drils and end mills.

It is a bit fiddly to set up, but once you have got your head around it, it becomes very obvious.

I've just looked on the Gadget Builder web site and discovered that my grinder is pictured there, near the bottom of the page.

Edited By John Baron on 18/02/2017 16:58:41

Maybe Having "Faking it" on the cover used gives an idea of the DVDs source

I have removed the link but will let the thread remain.

Edited By JasonB on 18/02/2017 17:19:43

Thanks Jason,

Neil

Hi Vic,

I made an end mill sharpening fixture based upon an ER32 collet block and use this for 4 facet sharpening of drills and seems to work ok.

The only problem is that to keep overhang to a minimum your only option is to grip the flutes in the collet but it seems to work ok. I've sharpened drills up to 20mm successfully although I'm not sure they still cut precisely on-size.

Jon

After breaking several #76 drills I used a high power loupe to examine the one remaining and was appalled to see how badly it had been sharpened. Since the broken drills had come from the same supplier, in the same packet, it was no wonder they had broken.

A friend had made D.A.G.Brown's small 4-facet sharpening jig which I borrowed. The newly sharpened drill bored all the remaining 35 holes perfectly, so perfectly that I read the original article, and the subsequent one for medium sized drills, and decided to design a combined jig for both the sizes described by DAGB. This PDF contains the drawings I created for both jigs in one. The basic design is DAGB's, I just combined both sizes into one unit. I also designed a special jig to help saw the small drill holders with a piercing saw instead of using the special tool used by DAGB. I hope you find it useful.

Oops!

I have now seen page 6 of the PDF and all has become clear!

Please ignore my request for a picture.

Ian P

Garry Wooding wrote:-

"After breaking several #76 drills I used a high power loupe to examine the one remaining and was appalled to see how badly it had been sharpened. Since the broken drills had come from the same supplier……."

Another source of badly sharpened and therefore badly performing drills are those orange & blue plastic boxes of very small drills on sale at exhibitions. I took a new No.70 drill from such a box and put it under the microscope at x200. The image is poor because of the very small depth of field and getting good top illumination but one wonders just how such drills are "sharpened". It's also revealing to compare cutting edges of carbide inserts at that magnification. For example those of cheap Far Eastern origin to say, manufacturers such as Iscar. Once seen at x200 the obvious difference in performance (and price) is explained.