John. B
Established Member
These are segmented mills made from Beech interleaved with Sapele.
The centre cross pieces of Sapele are cut and thinned to 5mm, the outer parts are veneers.
In order to keep the inserts square and straight I had to make this jig.Angle iron. Drilled, filed, a bit of welding 8mm studding makes up the jig.
Glued and clamped up, left overnight.
Next day take off the clamps.
true up the sides on the disc sander.
cut off the top, mount the bottom in the long hole boring jig (also shop made)
Mount between centres, put a spigot on one end for chucking.
Then on with the lathe steady (also shop made) for turning the bottom for the mechanism.
A small jam chuck to go into the bottom so I can reverse chuck.
Nicely shaped, now for the top.
First drill out the hole
turn it to a cylinder and put on a spigot
After turning the spigot step, joined the two halves to blend the top with the bottom.
Sand off, remount the top on the chuck to form the the top inset.
Sand off.
Put them back together to make sure they blend.
Thin parting tool 1/16" to scribe the lines.
That's another one done.
John. B
The centre cross pieces of Sapele are cut and thinned to 5mm, the outer parts are veneers.
In order to keep the inserts square and straight I had to make this jig.Angle iron. Drilled, filed, a bit of welding 8mm studding makes up the jig.
Glued and clamped up, left overnight.
Next day take off the clamps.
true up the sides on the disc sander.
cut off the top, mount the bottom in the long hole boring jig (also shop made)
Mount between centres, put a spigot on one end for chucking.
Then on with the lathe steady (also shop made) for turning the bottom for the mechanism.
A small jam chuck to go into the bottom so I can reverse chuck.
Nicely shaped, now for the top.
First drill out the hole
turn it to a cylinder and put on a spigot
After turning the spigot step, joined the two halves to blend the top with the bottom.
Sand off, remount the top on the chuck to form the the top inset.
Sand off.
Put them back together to make sure they blend.
Thin parting tool 1/16" to scribe the lines.
That's another one done.
John. B