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Track on laminated teak gun

Thread Status: Hello , There was no answer in this thread for more than 60 days.
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Johan S

New Member
Jan 25, 2007
36
6
0
Hi! I´m building a teak gun made of laminated wood. One very easy idea of how to make the track for the spear, is to simply make the middle wood lamina/lamell (?, bad at english...) not come all the way up in eaven hight with the others. This would make a square shaped track for the spear. Maybe not the best estethically solution unless the rest of the gun design is "square" with sharp angles.
Have anyone made a track this way and have anything to say about it?
Best regards, Johan
 
Johan:

I have not made a speargun before but I have done alot of wood laminating. What you are proposing will be much weaker than a rounded track - square joints are weak in one concentrated spot, round joints distribute the weakness over the circumference of the curve.

Also, I can't see how your method would be any easier to fabricate - you are essentially laminating two separate rails on top of the stock to form a trough, which means more assembly steps. The best method is to laminate your final stock, then carve the track out using a round router bit.

Gary
 
If you decide to keep the middle lamanite short you will then need to form a half round on top of the said laminate. You can form this by using a polished & waxed rod bedded into powder thickened epoxy.
 
The way Daryl Wong does it is a T-lamination. There are two side by side pieces with a third piece across the top of the two as sort of a cap. The track goes in that top piece, and I would think this method would be very good at resisting warping.
 
i've done it on barrells and it worked fine. An easy way is to drill holes at each end(if you wish extra length to be removed after lamination) alligning the laminates with the track lowered in laminates; then glue and clamp. i like the idea of a waxed rod/shaft to produce a round track. This could be done after lamination.
 
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