On 31/05/2015 4:09 AM, G. Ross wrote:
graham wrote:
On 30/05/2015 1:03 PM, G. Ross wrote:
Working on a green Bradford Pear blank. Sawed it round. Attached a
faceplate and turned the outside and dovetail socket. Then it
happened. The faceplate was attached with six #10 screws. Three came
out ok (I use an impact driver). The fourth one twisted off at the
neck. The fifth and sixth ones could not be backed out. Ruined an
impact Phillips bit. Finally drilled out the screw heads and cut them
off with a cold chisel. Threw that blank away. I think I will start
waxing the screws.

Rather than using a faceplate, use a large 2"+ sawtooth bit and drill a
recess for the chuck.
Graham

Thanks. That is an option. However all my chuck bodies have dovetail
jaws on them and I wouldn't trust them in a straight hole. I do have a
set of straight "spigot" jaws, but hate changing out jaws just for a
couple of bowls. These are 15 inch, 50 pound irregular chunks of wet
wood hacked out with a chainsaw.
I think I will (a) drill pilot holes in them like I used to do before I
had an impact driver, and (b) wax the screws so they will be less likely
to stick.

I use a Oneway chuck that has ribs instead of dovetails so it's not a
problem. I take it that you support those blocks with the tailstock
until you have it rounded.
I have two salad-bowl sized pieces of ash that I acquired from a
neighbour that I must get around to roughing out before he cuts down
another ash tree. We had a freak snowstorm last September and the damage
to the city's trees was unbelievable.
Graham
Graham

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