Somehow, I thought there was some significance to a hole that was just under .22! There's a bit of amateur barrel-making advice at yarchive.net/metal/barrel-drilling.html (Google "gun barrel boring" if that doesn't work).
I once went round the BSA (Birmingham Small Arms) factory here in the UK, to see how their Martini action .22 target rifles were made. At the end of the barrel production line there was an old guy equipped with a couple of wooden blocks, a hammer and a convenient window. His job was to straighten the the things up after all the machining, and he did it well - my 1960's model still shoots better than I can.
Andy
taurokm3 <grimjack@...> wrote:
The material is 4140 Steel, and it will go in the chuck, it would go
through the spindle, but I have no way to clamp it to the face plate.
This is going to be a gun barrel. It is .770" diameter and 8
inches long (total), with a tip that is 1" x .950" I am thinking of
building some v notched clamps out of aluminum that would bolt to the
faceplate, with notches for the bolts so I can center the stock. It
has been suggested that I weld a standard bit to a length of drill rod
with a V and use that, I just don't know what kind of hole that would
give me.
Thanks
Doug
--- In 7x12minilathe@..., "John" <John@...> wrote:
Are you drilling this hole into material that can be held in the lathe
chuck? Material dimensions and the material type would be helpful info.
The technique is straight forward (but tedious) if the material fits
in the chuck. Best situation is if the material fits through the
spindle, of course.
John
--- In 7x12minilathe@..., "taurokm3" <grimjack@> wrote:
Any one have any thoughts on the best way to go about a deep hole
without buying a deep hole rig? I am currently experimenting with a
home made drill, .175 x 11" shank with a .218 x 1" head, and I want to
mill it to a flat on top and bottom, then sharpen it like a twist
drill. I know it will need cleared frequently, and a lot of lube.
BTW, I am using oil hardening drill rod for the bit. Any one have any
other ideas?
---------------------------------
Yahoo! Mail is the world's favourite email. Don't settle for less, sign up for your freeaccount today.
