Working on my South Bend 9C

[Susquatch]

I've got some 1/4" arriving soon already.

Here is a piece of 3/8 HSS that I ground to do internal threading. It needs sharpening but works great.



The hole is fairly big so no clearance grinding is required, but normally one would relieve the rear and bottom in addition to the front.

I don't normally do any top rake grinding unless I need it.

 

[Golem Pens]

Here is a piece of 3/8 I ground to do internal threading. It needs sharpening but works great.

View attachment 83653

That's my plan with the 1/4"!

 

[BaronJ]

Always good to use what is on hand but if you order 3/16 cutter blanks now they will make your learning cycle much quicker. AliExpress, 4 or 5 mm square hss, 200 long is less than $8. The difference in grinding time is significantly less

Hi Guys,
You will also get four 50 mm blanks or three 66 mm ones out of a 200 mm stick. Don't forget you can also reuse/regrind broken HSS tool bits.

 

[Susquatch]

That's my plan with the 1/4"!

Don't do what I did. I needed it to do 10tpi thread. You don't need nearly that much. Just grind it away to the thread ID plus some clearance. That keeps the shaft strong and rigid to the extent possible.

 

[Golem Pens]

Just need to cut this wrench down to size 😉

 

[Susquatch]

Just need to cut this wrench down to size

Lots of guys make one to match the other handle. I didn't do that. I just use a box wrench like yours.

 

[Golem Pens]

I've been using a wrench and finally grabbed this with the intention of trimming it to a less silly length.

 

[jcdammeyer]

If you don't want to cut that one because it's part of a set check out the RESTORE store. Lots of that sort of stuff on the back wall and not that expensive.

 

[Golem Pens]

Ah I keep meaning to get out there! This one was bought specifically to be sacrificed though. Guess I need to borrow an angle grinder now hah.

 

[Model Citizen]

I bought a 22mm orphan socket at a pawn shop.
Cut it in half, threaded the end of a piece of shaft for a knob and welded it to the socket &
Bob’s Yer Uncle!

 

[Golem Pens]

Perfect! Learning welding is on the very far away wish list for me

 

[Model Citizen]

I need a disclaimer for that ugly weld.

 

[Susquatch]

I need a disclaimer for that ugly weld.

Just so you know, mine are much uglier.

Obviously, you have a lathe and you know how to use it. Make a bigger round nut (probably cone shaped), then drill and tap it for another handle - just like the other one there.

Lots of guys do a top taper to put the handle on a steeper angle.



I'm big on stuff like that specifically cuz I can't weld shit.

 

[Jswain]

Good external and internal threading project...

 

[YotaBota]

Lots of guys do a top taper to put the handle on a steeper angle.

The angle will depend on how "robust" your fingers are. You need to make sure there is enough clearance between the two handles so you don't get pinched.

I made the top nut and handle for mine like this. The post in the top is for the DTI arm.

 

[Golem Pens]

How did you drill and thread into the angled side for the handle? I also like that ways cover...

 

[Jswain]

Machine the part that takes the place of the current nut first fully then get it installed to where it is about to lock in tight.

Then mark it and drill for the handle so they line up when in use. You can adjust handle position by throwing it back in the lathe and removing small amounts of material from the bottom

 

[Susquatch]

The angle will depend on how "robust" your fingers are. You need to make sure there is enough clearance between the two handles so you don't get pinched.

Yes, that's exactly why an angle is preferred. That's a good clarification for the OP. Thanks!

 

[BaronJ]

How did you drill and thread into the angled side for the handle? I also like that ways cover...

Hi Michael,
I've been using silicon baking sheets on my lathe for a good number of years to protect the lathe bed under the chuck ! You just need to remember to give it a squirt of oil underneath now and again !

 

[YotaBota]

How did you drill and thread into the angled side for the handle? I also like that ways cover...

After the taper was done and the angle was good, I shimmed the the nut so the angle part was horizontal in the vise and centred in the mill then drilled and tapped the hole.

The way cover is just a piece of left over BBQ cover.

Your welcome to drop by if your out this way.