New gun = broken muzzle

[Guffer]

Ok, newbie so I apologise if this seems a basic question.

I just acquired a cayman gi speargun, and the muzzle broke on me. The staff admitted that they damaged the packaging during delivery. I was quite upset and was about to return it when I remembered that some people have converted their guns to an open muzzle.

In order to do this, I need to dremmel off the broken bits and add something to wrap the line over to hold the spear down. But do I also need to change the position of the bands downwards or can I keep them where they are?

 

[kwtony]

Keep em where they are. I used a small broken drill bit, drilled it most of the way in and filed it down...you might like the open mod, i did

 

[Guffer]

I have some 314 stainless 3mm bars which I will bend in to shape and epoxy in to the hole.

The broken bits of the muzzle though I think I will just dremmel the buggers off, too much risk of cutting/damaging the mono.

 

[kwtony]

If you use a drill and let the plastic melt around the bit, you wont need epoxy. depending on the material of the muzzle epoxy wont hold up too long. I have done this on several guns with zero issues afterwards. Make sure the pin is angled forward and not too tall.

 

[Guffer]

Ok, I wish to use 314 steel for obvious reasons but I shall use your techinque by heating the end a little to 'melt' it in

I will angle the pin in so that it gets a good foothold in the plastic but bend it so that the open end points in the same direction as the spear will travel.

 

[Guffer]

Sorry for taking my time to get back, I thought I had replied to this but obviously it didn't take.

I got my hands on some 3mm 304 pins, bent one at the right point and to the right angle, drilled a 2.8mm hole heated the tip of the pin and fitted it. Before it "set" I made sure of the angle and orientation. Then with a dremel took off the broken bits of the muzzle (I still need to smooth it a bit and make more of a channel for the line that goes under the muzzle but I am happy and a couple of test fires confirms it is working well.

Now to see if I can catch a fish with it

 

[Guffer]

A pic of the result.

 

[Sorcerer]

A pic of the result.

I did the same as you and I have huge issues with mono tangling on shaft exit. While the problem is lesser with single loop, double loop is complete clusterfuck... Have you done any other tweaks?