• Welcome back Guest! Did you know you can mentor other members here at H-M? If not, please check out our Relaunch of Hobby Machinist Mentoring Program!

  • In order for the Member Map to work properly, you must allow Google services AND Hobby Machinist to know your location. These settings are found in your browser of choice and in your Hobby Machinist profile.

Winner Home Grown Cutter Grinder

  • Thread starter Thread starter Bill Gruby
  • Start date Start date
Status
Not open for further replies.
After cutting and setting the tool Holder yesterday I was not happy with the look. It was too bulky and looked even worse. Back to the drawing board. Violla.

The one on the left is what I am going with. Yes, you can make a silk purse out of a Sows Ear. :rofl::rofl::rofl:

This is all I can do till after the Holiday. The War Department say put it to bed for a few days. Translate that to you and I are going to the MALL ( Big Cringe)

"Billy G" :))

102_0323 (800 x 531).jpg
 
Last edited by a moderator:
I just finished 9 pages of drawings for the "Tool Holder". These will be made available to all that want them once I build a Tool Holder from them. She said no shop, not no work. :rofl::rofl:

"Billy G"
 
Last edited by a moderator:
The prints are finished. 10 pages with an assembly drawing. And you thought this would be a walk in the park. :rofl:

"Billy G"

102_0324 (850 x 565).jpg
 
Last edited by a moderator:
Still designing -- This is the spindle. Roller Bearings and seals at both ends. The taper is 16* inclusive for the ER20 Collet. Nose threads are 25mm 1.5. Rear threads are 3/4 NF. The ER20 Collet was chosen for its max hold of .5625. That makes 15 pages so far. :))

"Billy G"

102_0325 (800 x 531).jpg
 
Last edited by a moderator:
Time to get going again. My least favorite lathe operation is "Trepanning" ( fancy name for circle cutting ). A most here though. The 1/8" Aluminum Back Plate with the indexing holes is first. The easiest way is "Trepanning". Some precautions need be followed. I will show you new people these in the set-up. First we need to know how big. It is a 4" circle with a 2" hole in the center. I cut a 5"X5" square and laid out the two circles.

"Billy G"

102_0326 (800 x 531).jpg
 
Last edited by a moderator:
The first step is the sacrificial backing board. You see the four screws holding the part to be cut. These hold the outside from dropping off when the cut is finished. You don't want that to happen. The center hole for holding on an arbor is next. The larger the better.

I am outlining this stuff for the new peoples so you that have done it before please bear with us.

"Billy G"

102_0327 (800 x 531).jpg
 
Ready to mount on an arbor in the lathe. I will be using my ER40 chuck for this. Got unexpected company.

"Billy G"

102_0328 (800 x 531).jpg
 
Mounted and the cuts being made. Part is still on the B/board with the cut away piece off. I am going to cut the 2" hole in the center the same way. I have to find a way to hold the ring when it breaks away. I can't drill any holes in it.

Remember

#1, Use a sacrificial piece.

#2 Make sure outside to be cut away is mounted solid also.

#3 Make light cuts and go slow.

"Billy G"

102_0329 (800 x 531).jpg 102_0330 (800 x 531).jpg
 
Last edited by a moderator:
Let's finish it up. The hold is with deck screws on the OD. The cut is thru. The part off and all the parts. That was fun. :rofl::rofl:

"Billy G"

102_0331 (800 x 531).jpg 102_0332 (800 x 531).jpg 102_0333 (800 x 531).jpg 102_0334 (800 x 531).jpg
 
Last edited by a moderator:
You've done this before. :))

That same Starrett chart hangs in my shop. I also see that 4-way die drop in your photo. And it reminds me of another of my projects in progress, a brake for my 50-ton press for which I found a 3-1/2" sq 4-way die drop that will get shortened so the assembly will fit between the columns, 26". This will leave me with a short piece leftover, too.
 
Status
Not open for further replies.
Back
Top