Transverse drilling attachment V2

[Christophe Mineau]

Hi,
I already showed my side drilling system on the lathe :
Homemade Transverse Drilling Attachment

This first version has the drawback of having a too big chuck and too long attachment sleeve behind it so that it really works only with short bits.
I recently found a new kind of smaller chuck and imagined a way to attach it at the end of a shaft with the bare minimum additional pieces.

Here is how I did it :

The mandrel is a small three jaws mandrel to be used on a power screw driver. It is quite precisely made.
It has an Hex shaft. Here is how I imagined attaching it at the end of my 12 mm shaft. I simply drilled a side hole in the 12 mm shaft like if I wanted to use a set screw.


But instead of using a set screw, I just filled the hole (two sides) by welding a little spot.
In order to avoid any projections, I wrapped the chuck and shaft with a piece of aluminum sheet.


I then cleaned up the welded joint on the lathe to get a smooth surface on the shaft.


Here this is the little fixture I use on the metal lathe QCTP. You can see that the chuck can be pulled back
much more than on the previous version.


And here on the wood lathe :

[DIYer]

Thanks Christophe Mineau! We've added your Transverse Drilling Attachment to our Drilling and Drill Presses category,
as well as to your builder page: Christophe Mineau's Homemade Tools. Your receipt:

Transverse Drilling Attachment by Christophe Mineau

tags: chuck, drilling

[PJs]

Nice Christophe. Now with your indexer you are set to go! Thanks, ~PJ

[Paul Jones]

Christophe,

Great idea about the wielding the part through the two small holes. Nice to see your cross drilling and indexer projects.

Thanks, Paul