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The plans for the larger 66 mm diameter boring head shown in "the Clan" are in "Projects for your Workshop Vol 1" as well as a good descriptive text on how to cut dovetails painlessly.
Found it in Tee. No international shipping info on website, anybody know?
Hi Chris, an automatic facing head has a gear on the screw that is used to adjust the bore diameter, the ring that is held stationary has a ratchet on it that engages in that gear each time it goes round. If the ring that is attached to the ratchet is held still then each time the head goes round it pushes the screw around a little bit so you get automatic feed. Now you need some sort of stop that you can set and a clutch to prevent it going too far: So as the screw goes round it comes up against the stop and the clutch prevents the ratchet from pushing the adjusting screw any further round.So an example: if you wanted an undercut in a bore you would poke your boring head in and adjust the stop to let the boring bar move outwards into the bore. Then you could under power bore down just like you would on a lathe, back to the top add a bit more under cut under power.... on you go. I have attached a few more examples of what you can do with one Jo
Have a look at "postage" under "Additional Information" at the bottom of the left hand bar on the TEE websiteHTH Rod