I designed & made locking handles 4 my prazi lathe. To make them see pics & dim. drawing in another post. File size limits have been reached.

Installation steps

1. Use M6 allen wrench to rotate M8 locking screw so assembly is firmly locked.

2. Slip handle mounting ring over locking cap screw head

3. Rotate handle to position you like

4. Secure handle to locking screw head with ¼-20 set screw with locking patch or a liquid thread locker

Optional & recommended to ensure handle won’t work lose over time

1. Lock assembly & remove handle locking set screw

2. Hold handle in position you like

3. Stick magic marker into set screw hole & make a mark on locking screw head

4. Remove handle & locking cap screw

5. File or mill small flat at mark for set screw to lock against

6. Reassemble everything & secure handle using set screw with locking patch or liquid thread locker

For tailstock spindle locking handle

1. Cut 6” long 1/4” diameter piece of aluminum rod

2. Bend rod 90 degrees so handle section is about 3 1/2” long

3. Mill M6 hex on short end

4. Put handle in vise

5. Apply epoxy inside head of locking cap screw & sides of hex on end of handle

6. Push cap screw on to handle hex & with small hammer tap cap screw so it sits firmly aligned on handle

7. Leave it in vise for epoxy to cure overnight

My instruction post is chopped up because site has post size limits.

Here are pics & dim. drawngs.