Step drill reamer for slimlines

[Penpal]

Separate post to describe a simple ground high speed drill that was thirty plus years ago the only tool sold as a l cleaner, reamer for slimlines.

This is my original one still a beaut snug (slip fit ) these days I square the ends of the blank with a disk sander. I clean each blank from each end before squaring, after glueing and before turning to get that beaut reaming shown on the four blanks in the picture.

The grinding is normal for drill makers to understand the close up shows how the reaming is acheived.

Thimple I hear you say, well I say all our discussions on mandrels, savers, bushes, drills etc all seem so very simple but they are not in practice are they?

Peter

 

[wm460]

I guess you could say they are as rare as hens teeth.

 

[Scots Bill]

Clever stuff and lovely blanks Peter.

 

[21William]

I guess you could say they are as rare as hens teeth.

It's surprising what's out there sometimes.

 

[Penpal]

Another true definition that does drill through, interesting.

Peter.

 

[wm460]

That is interesting William, haven't seen those in Morse taper before.

 

[Penpal]

My adventures in America with the Fuller Company (also of fame as the Fuller Brush Company) I dealt with the owner a Fuller who on their catalogue guaranteed a poofteenth of a nats whisker accuracy in his catalogue for custom ground step drills. I even called in my mate in the nth of America to send him brass sleeves as a go no go guage , several attempts heaps of phyone calls , assurances galore, no accurate result. Just as well I never sent the pictured one on this page heaven alone knows where it would have ended up.

Peter

 

[wm460]

Any chance of a link William, to the best of my knowledge they are not available in Aust.

 

[21William]

Any chance of a link William, to the best of my knowledge they are not available in Aust.

I bought it at model engineering show. I think it's a combined drill/counterbore for sockets screws.

 

[Winemaker]

I googled this combined drill/counterbore for sockets screws.lots to look at

 

[21William]

If you had a metal work lathe and a tool post grinder you could in theory grind your own from a standard bit?

 

[wm460]

If you had a metal work lathe and a tool post grinder you could in theory grind your own from a standard bit?

Hmm I now need a tool post grinder!

 

[21William]

Hmm I now need a tool post grinder!

It's never ending isn't it?! I spend more time making tools sometimes than I do making things with them!

 

[Penpal]

If you had a metal work lathe and a tool post grinder you could in theory grind your own from a standard bit?

Good luck with that thought I will post the requirement for the original posted step drill.

Peter.

 

[wm460]

It's never ending isn't it?! I spend more time making tools sometimes than I do making things with them!

Just has a quick Captain Cook before I went to work doesn't look to hard to make one.
Have you made one?