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Step 10: Addendum

Many people have commented on "backing the bow', this involves gluing a fabric such as linen, burlap, denim, silk, etc or rawhide or sinew to the back of the bow. With the exception of sinew, these backing do not improve the performance of the bow and are more an insurance policy that if the bow fails it will not result in a catastrophic detonation. So, having said that, if you feel uncomfortable with the risk attendant to an unbacked bow, by all means apply a coating of titebond, lay on a layer of fabric and two more coats of titebond wood glue and then trim when dry.


And now for something completely different, fruit at 8 paces.



 
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azurelupine3 years ago
Three layers of fiberglas, and a final of snakeskin (your choice) - I'm gonna use copperhead, simply because you can't swing a dead cat around here without stirring one up! Besides, glycerin tanned copperhead is a beautiful piece of leather.
Bet that looks cool!

Try 3 layers of fiberglass drywall mesh tape. works great , but not very attractive unless painted or backed over tape with linnen.

Best backings for the money... sinew, rawhide, bamboo, or fiberglass (like the stuff you use on a boat). The backing actually serves two, sometimes three, purposes.

First, yeah, safety. If/when the bow fails, it's not good to have pieces flung about. Oak shrapnel is no fun.

Second is to reduce string follow. Oak is a good, solid wood which helps resist compression in the belly (string side) of the bow. However it's missing a natural backing. A good, elastic backing is needed to make sure the bow returns to it's full upright position. Over time the belly will compress and you will see more and more arc in the bow when unstrung. This is string follow. A good, elastic backing reduces this.

Third, the right backing could also provide a little more speed to the bow. Again, er go back to the elastic nature of a good backing. The best modern backing is fiberglass. Put a couple coats of fiberglass on the back and you'll have a very snappy bow.
i bet 2 layers of Carbon Fiber would work good as well as look amazing. The best way to do this is if you can get a professional to do it because they have a a special vacuum press they could put it in to get good even pressure forcing the resin into the fiber.
another question, when its done, is it just your hand that supports the arrow on the handle, or is there anything you can buy that glues on? what kind of Bowstring do I buy that fits this 70" bow? thanks. do you just twist the bow string to ajust its size if there is only one kind of string to buy?
Yep, I just shoot off my hand,can be a little dangerous if your arrow has a splinter. Once got an inch of fletching embedded in my finger. You can just make a small shelf from wood and glue it on, or buy a cheap stick-on rest, or wear a calfskin glove.

The string is 2 inches shorter than the nock to nock length. Yes you can use twisting to adjust the length.

I just bought a cheap 67" string off the net.
I'm about 95% sure this is the string I ordered.

http://www.dalehollowoutdoors.com/triple-trophy-dacron-bowstring-16st-67-blck.html
Well Im at the stage of completion where all I have to do is noch the bow string mounts, *or lash on some nochs* I've got it tillerd, which was way easier then I thought it was going to be. it didnt need much work at all, took about 20 minutes.
Hours of finish sanding and rubbing down with steal wool, an I'm at the point where I'm ready to apply the finish. I believe I'm going to use tungoil and a rub down of raw beas wax melted into cheese cloth.
((melt the wax in a double boiler (pot with water in it, and a smaller pot that fits inside the first one. you can use a sauce pan and a steal mixing bowl.) fold cheese cloth into a nice palm sized square, 4 maybe 5 layers thick, or a 1/2 inch thick of folds, then soak the cheese cloth in the wax, saturate it as much as possible, then let it cool off and solidify. now you got a ice block of reinforced bea's wax you can use to rub down your bow. its great because its nontoxic (so if you need to sand again, your not putting toxic wax dust into the air) and it comes off easy with some paint thinner or wood cleaner.))
"Many people have commented on "backing the bow', this involves gluing a fabric such as linen, burlap, denim, silk, etc or rawhide or sinew to the back of the bow. With the exception of sinew, these backing do not improve the performance of the bow"

This information is not quite correct. Applied properly, a rawhide backing will also improve a bows performance (this is how many Asiatic bows were given their reflex profiles), as will a backing made up of any fiber cordage that has a decent amount of stretch and return (such as silk). It would be accurate to say, however, that sinew is probably the appropriate backing for this type of bow in most situations and is the hardest one to screw up.
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