Not long ago a member posted his home built cresting tool.  The builder had solved the arrow wobble problem with some sort of nut obtained at a harley dealership.  :confused:  

So, I've built a cresting tool and am trying to solve the wobble problem.  Can anyone direct me to the thread I refered to above??

Have tried the search function and it did not turn it up.

All help greatly appreciated.

What about the How too section

good luck. I heard the thread originator was electrocuted in an arrow painting mishap.
  :cool:

No answer in the  "how to", but loaded with many other great ideas.

I did find the thread.  Kinda embarrassing, but remembered that I had posted in the thread and found it by searching my own posts!

answer was the OP used a well nut.

once this tool is up and running I'll post some pics.

Yea I would like to see some pics of how that works

Ok, I hope you can afford it, an 1 1/2" of rubber tubing! something flexible, surgical tubing. easy. the tubing connects the shaft to the motor, a few v blocks, your ready to crest away. even if the shaft doesn't line up with the motor, no problem. but don't use a 2000 rpm motor :-)

I initially tried the tube but but got quite a bit of wobble.  Was able to crest a set of a grandson's older arrows but it was kinda tricky.  Will try to locate a well nut and see how that works.

was your tube soft/flexible? I've used home-mades with the yellow surgical tubing for years, no problem. Are you using felt covered v blocks and how far down the shaft is the first block?

It was flexible.  Could have been a bit too small in diameter.  I have three V blocks covered with a thick soft canvas.  One possible problem could have been that the arrows were fletched?

Well nut?  What is that?

rubber tubing for a slingshot
Make sure its just long enough to hold the shaft in place.

If the shaft is long enough on your motor you can use the attachment for the Bohning crestors. That is what I did. I used a motor from an old copy machine. It was geared about the same as a BBQ spit motor.
This works well for alum. and carbon shafts, they are straight. Wood was another story, any bend in shaft and you get wobble.

One thing you could try in order to reduce or eliminate wobble could be to use one V-block near the nock, and one near the point, with felt in the v block, then use a flat piece of felt covered material over the top of the shaft at each v-block.

That way both ends of the shaft are held firmly in the "V" of the V-blocks.

May take some trial and error and shimming to get a good fit but that would be my plan .... will be very cheap to try.

Reduced the wobble a lot by shortening the rubber tube.  Think it also needs to be a bit larger in diameter.  Also found it beneficial to use slight finger pressure on the shaft with the V block set as close to the work area as possible.

Need to get some pics up with this and will as soon as practical.