Hello,
I'm new to this forum, but have been making my own guns for about 7 years now. This is a great site with lots of info consolidated in one place! In someways, I wish I had learned about it sooner so I wouldn't have had to "reinvent the wheel" It is amazing how many ideas that I have had over the years at making a speargun better (that I thought were original) only to find out that they had already been tried by others. However, knowing as stubborn as I am, I probably would have had to learn from my own mistakes anyway<g>.
I have had a chance now to read many of the posts on this forum, and I agree with most of the advice 100%, where I differ usually is only based on personal preference. Still considering myself a "beginner" I doubt I can add any new advice that the experts on this fourum haven't done already, but I can certainly "second" their advice from some of my own personal experiences.
I certainly have had some learning experiences over the years. Like many of the other newcomers building thier first gun, I had to do it all "my way" ...make every part myself and try to find a "bigger, better and cheaper way"... I of course built my own stocks, carved my own handles, made my own trigger mechanisms, spear-tips, and yes ...even made my own back yard funace to heat, quench and then temper my own steel spear shafts. And not knowing any better, test fired my guns on land (story for another time)
Attached are pictures of my latest gun. Its not 100% because I didn't put the teak handle insets on. They really give the gun a classic look. Also, the finish lost its luster cause I took it out the last couple weeks for testing.
The gun is my ~10th fully assembled and tested gun it is virtually identical to the 9th gun I made except for minor improvements (im almost there!) The 9th worked great, but it was lost at sea! I'm still hurting over that one!
Sorry I dont have pictures as work in process, but I will describe some basic attributes.
The gun has 6 laminations of teak. I've worked with many woods (mohogany,oak,poplar,walnut,cherry), but once I tried teak, I have never gone back! Teak works, carves, and even smells great.
I laminated with resourcinal sp? I'e never had anything delaminate ...including mixed species of wood (I can't say the same for all epoxies). I have great confidence in this stuff. Also, drying to a dark brown color, I like the "pronounced" sandwich effect it gives to the layers. Also, I think its a bit better at filling voids between laminations without "leaking out" like epoxy.
Instead of making my own trigger mech on this one, I made life simple and just bought a riffe trigger mech....no real preference here between the other touted mechs, just the most reasonable in terms of price/availability.
I inset a 3/8 nylon tube as a track. I am a strong believer in an enclosed track and probably will continue using this method in all my guns. Delrin is too expensive, and I don't think there is any science showing its low friction has any effect under water in terms of speed or distance. I can only tell you the difference between my enclosed track guns and my open track guns is the difference between shooting a shotgun and a rifle! I can fire this gun on its side, or upside down and it still shoots perfect every time. I also like the nylon track cause it take the wear and tear better. My guns without the nylon track are worn, scratched, chipped etc. maybe not from the actual firing of the gun, but probably from the way I load the gun and let it bang in the reef when Im atteding to other things. The track is pinned and set in a bed of silicone. The tube was inset in the gun and the top was cut off revealing the channel for the fins. The tube is flexible enought to expand and contract witht the wood around it since it is not a ridgid bar.
The finish is several layers of epoxy with a final coat of varnish. A few thoughts on the finish. First, it is almost a crime to put anything over teak. If I was doing this peice as "decoration" for my mantle, I would simply leave the wood bare and burnish it with ultrafine steel wool bringing out the natural oil in the wood. Fortunately, I'm not ready to hang the gun over the mantle ;and therefore, I wanted something more durable. I tried leaving it bare and wiping with tung oil and the like, but since teak is relaively soft, it gouges very easy. I would come back from dives only to find I had banged the gun into the reef. There were always deep scraps, gouges and the like. So this brought me to epoxy. I put a "piano" finish on this gun. The trick here, which I haven't seen others mentioning on other post, is to 'scrap' the wood and the epoxy finish level and flat in between each coat. You must use a "cabinet scrapper" or similar tool. Teak and epoxy scrap like a dream leaving the final finish filled, perfeclty level. No sanding required, A little rubbing compound and your have a surface as flat and shinny as glass....and certainly no air bubbles!
On the handle I used marineboard becuase there can be lots of strees on the handle (especially with quick moves on a heavy gun, or when fighting a fish)...Ive used wood for handles before but, worried that some of the fine carving might crack or split where attached to the stock.
Sorry for the long post, but I look forward to hearing your feedback and helping where I can,
Gator