Does anybody have any experience doing it the other way around - i.e. the loop is of a thinner cord material, and the wishbone is thicker?
That's the way I used to do it and it works fine. Loop 1.8mm, wishbone 3mm. If you think about it the loop has to be of thin diameter, because it's doubled up and tied in a knot which is inserted into the band. If the line was any thicker the knot would be too big to insert.
Well done Judah.
Finally 
Nice YJ.
I sell band making material; rubber tubing, Dyneema wishbone material, band tying twine etc. You can see the contact information on the contact us page of the store.
Should oil and slow speed really be used with carbide bits?
I wonder if this kind of pipe plug would work without altering the balance of the gun too much. With a small nut of course.
Ah I don't think they were doing in such a bad way, probably had a few beers themselves 
2nd video is nice too. Thanks for posting Attan. If these guys had more footage and decent video quality I'd buy their vid.
A question to the pros; what's the best way to seal a speargun pipe? What kind of plugs, what kind of adhesive?
A related question; can a system for sealing aluminum pipes be inadequate for carbon pipes due to some kind of water permeation through the carbon fiber?
Wow Don you're a treasure chest The lever looks so similar to Wood guy's work. And that gun looks like a reverse hybrid which I thought I invented 
http://spearfishing.world/spea…id-ultimate-speargun.html
Same here, weird.
Nice!
Can you please describe in detail what you did? Did the bit piece just fall out from the vibration?
Download the pics from the phone to your PC. Upload the pics to an image hosting site like image shack. Maybe you can upload to imageshack directly from your phone. Post the image link with the image tags.
Where can I purchase a compatible shark fin 7mm shaft?
http://freedivingspearfishingg…tainless-steel-shaft.html I have limited lengths at this time, but I do have 150cm which is what your gun probably takes. What length shaft do you need?
It's made from 12L14 steel.
Carbide drill bits are very brittle. Is there any part of the bit sticking up out of the jig that you can grab? If not I would clamp the shaft in a vice close to the drill jig, and give the jig a carefull solid hit with a hammer. With any luck the bit will break exactly at the point that will allow the shaft to come out, with some more tapping with the hammer. If you don't have a vice try supporting the shorter end of the shaft sticking out of the jig on the floor. This is just an idea, I've never done this before.
We need a pool..
I was thinking along the same lines, but a pole standing from the bottom that the speargun muzzle can rest on the point of it. It would take away a lot of the human error as the gun would already be aimed well provided the back end will be positioned correctly, half the job is already done.
A speargun is supposed to shoot where you point it. Guys that have gotten used to shooting guns that require compensating should have no problem quickly unlearning a bad habit.
Welcome to the forum.
