IF you can wait till tomorrow I can take some pictures of how I cut mine.
Basically I use two different methods depending on the antler.
One method is to chuck it between centers (I use a steb center turn it round and drill using a jacobs chuck in the tail stock and collet in the head stock.
If you are real accurate you can put it on the DP but make sure the sides are straight with no taper.
I also cut them on the bandsaw or tablesaw using a Bessy Clamp to hold the alter in place on both ends.
The Bessy will lay relatively flat .
I push teh sled trough the blade.
Rotate 90* and make the second cut.
I am now able to cut both ends square.
Using either of these methods I haven't blown out a piece of antler that I can remember.
I do make pens out of antler that has sat in the leaves over a year, some of the prettiest pens I have ever made.
These two were from a humongous section of mule feer stabilzed with CA.
The the antler was around 1&1/2 " in diameter and entirely porous material.I actually cut "good parts off the outside"the part I used was the part that most would think unuesable.
I don't let anything go to waste.
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