Shank diameter and wall thickness vs derlin tenon size?
Posted: Sat Feb 02, 2013 12:20 pm
Was wondering if there was a rule of thumb with tenon size and wall thickness?
I was working on my second pipe last night. I turned and drilled the stummel "shank diameter was .580 and 5/16 mortise" and it looked good. Then I turned the stem to the approx. shank size then drilled and inserted the 5/16 derlin tenon.
Then when I put stummel on the stem to turn stem and shank together to get them the same diameters the shank cracked.
The first pipe was done the exact same way with a shank of .550 and it didn't crack.
Is it safe to assume the second brair was bad and cracked or was I just lucky on the first pipe?
Is there a minimum shank size and shank wall thickness for certain size tenons?
I want to get 1/4 derlin for tenons, do you still use a 5/32 draft hole with a 1/4 tenon?
Thanks
I was working on my second pipe last night. I turned and drilled the stummel "shank diameter was .580 and 5/16 mortise" and it looked good. Then I turned the stem to the approx. shank size then drilled and inserted the 5/16 derlin tenon.
Then when I put stummel on the stem to turn stem and shank together to get them the same diameters the shank cracked.
The first pipe was done the exact same way with a shank of .550 and it didn't crack.
Is it safe to assume the second brair was bad and cracked or was I just lucky on the first pipe?
Is there a minimum shank size and shank wall thickness for certain size tenons?
I want to get 1/4 derlin for tenons, do you still use a 5/32 draft hole with a 1/4 tenon?
Thanks