|Myford ML7 - Chuck Guard |
|UNDER CONSTRUCTION - requires links|
↓ Here is the support frame and components.
↓ Here the support frame attached to the back of the lathe bed.
↓The Guard Support Rod screws into the Vertical Support Post.
↓The opposite end of the Guard Support Rod has a 2.5mm cross drilled hole. A tommy bar, or a 1.5mm allen key, can be inserted into the hole, to help fully tighten the bar into the Vertical Support Post.
↓ The opposite end of the Guard Support Rod also has a shallow 8mm long groove near the 2.5mm hole. This groove is used to retain the PVC Guard Holder on the Guard Support Rod (see below).
↓There is an M5 threaded hole in the rear of the Vertical Support Post. An M5 socket head grub screw is screwed into this hole, and bears down onto the thread of the Guard Support Rod.
↓M5 locking screw inserted.
↓ A 4mm brass pad is placed under the end of the M5 socket head grub screw, to stop the grub screw damaging the M6 thread on the Guard Support Rod.
↓ You can see two marks where the pad has pressed against the M6 screw thread.
I had to make a 4mm punch and die to make the 4mm pad accurately. Click here to see the punch and die.
↓The 4mm thick Acrylic Guard Assembly fits into the slot.
↓ Two M3 screws pass through the holder. When they are tightened they compressed the holder around the Acrylic Guard, to hold it firmly.
↓There is an M5 tapped hole on the back of the PVC Guard Holder.
↓A PVC cylindrical spacer is located on the Guard Support Rod.
↓ I faced the top surface of the bolt head in the lathe, to remove the raised markings and make the surface flat and smooth.
↓The adjuster screw bears on the PVC Guard Holder.
↓The side panel of the Acrylic Guard Assembly is shaped to follow the contours of part of the spindle and the back gear lever. I finished forming the curves using a drum sander mounted in the milling machine. I got the Silverline drum sanding kit from Toolstation (it has been useful).