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Awesome PVC bows! (Read 4958 times)
Dan
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Awesome PVC bows!
Jun 22nd, 2012, 4:15pm
 
We've talked about pvc bows a fewtimes on here and most are pretty dissapointed to them compared to a selfbow. Well, this man has taken PVC bows to the next level! http://www.youtube.com/user/backyardbowyer?feature=results_main
 
He makes horse bows, recuves, takedown bows, egyptian bows, you name it and he'll make a bow with the same performance as a traditional bow out of pvc in a morning's work.
 
I made the 'youth recurve' but I didn't flatten it as much it's about 50lbds at 27in. Not quite as accurate as my self bows but I think it's becuase it's shorter. I also made it in about 2 hours so I was pretty happy with the great compact finished product. I definitely look forward to adding this skill and a few pvc bows to my arsenal.
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Re: Awesome PVC bows!
Reply #1 - Jun 22nd, 2012, 5:58pm
 
Granted, my knowledge of archery is both rudimentary and largely academic, but speaking as a layperson I'm really impressed. *Files in extensive to-try-when-I-move-out-of-the-d----city file*
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Reply #2 - Jun 23rd, 2012, 12:18am
 
Wow.  This is incredible.  I love his Egyptian bow.  I've wanted one exactly like that for years now and have never been able to find one for sale.  I can't seem to find a video teaching how to make it.  Does he have a tutorial for it?
 
Awesome find, Dan!
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Dan
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Re: Awesome PVC bows!
Reply #3 - Jun 23rd, 2012, 8:22am
 
Quote from Atlatlista on Jun 23rd, 2012, 12:18am:
Wow.  This is incredible.  I love his Egyptian bow.  I've wanted one exactly like that for years now and have never been able to find one for sale.  I can't seem to find a video teaching how to make it.  Does he have a tutorial for it?

Awesome find, Dan!

 
Unfortunatly no, he does not have a tutorial. I think if you made the standard recurve from 3/4in schedule 40 and then added the deflex in the handle you'd get about a 40lbd egyptian bow that would be great for demos and such.
 
I wanted one too just becuase it's something different and I'v read that the isrealites probably would have used something similar so that adds to the cool factor for me.
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Re: Awesome PVC bows!
Reply #4 - Jun 24th, 2012, 12:19am
 
Dan, I glad you are also enjoying PVC bows, this couple month i am a bit addicted to archery because of this PVC bow. I have made several flattened PVC bows, one of them snap and two others fail, the others turn out nicely, and now Im in the process of perfecting it.  
The best PVC bow I've made is my reflex bow, its the fastest bow I've ever shot and so far its the most durable PVC bow and have a very small to none set, after a lot of usage the reflex angle is still same all the time not like the recurve one which the set was formed fastly, I guess its because the whole limb is moving not like the recurve version one which has the static recurve tips thus will put more stress on working limbs.  
I guess this reflex bow draw weight is close to 40#(at 27"). The shape is more like a native american reflex short bow. Here is the photo:
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Dan
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Re: Awesome PVC bows!
Reply #5 - Jun 24th, 2012, 12:28pm
 
If you put some recurves in that bow it'd go even faster!
 
They are very fun to shoot and they look cool. I plan on making a near exact replica to the hunger games bow and a couple takedowns next.   Cool
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Re: Awesome PVC bows!
Reply #6 - Jun 24th, 2012, 10:00pm
 
www.stickbow.com's Leatherwall has a four part video by the same guy on how to make a horse bow with wooden siyahs.  I believe the title of the thread was PVC bows or something similar.
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Re: Awesome PVC bows!
Reply #7 - Jul 8th, 2012, 1:42pm
 
I'm curious as to how these compare to wooden bows? I saw a video with a guy shooting one and though it looked alright, it seemed a little slower than what I am used to.  Maybe it was just that bow though?
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Re: Awesome PVC bows!
Reply #8 - Jul 8th, 2012, 1:55pm
 
This sounds awesome! Unfortunately, youtube is blocked here, so can you explain the process, Dan?
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Re: Awesome PVC bows!
Reply #9 - Jul 8th, 2012, 2:07pm
 
Morphy his average bow has about the same fps as your averarge straight self bow or fiberglass bow (140-160fps), and his best performers are about equal with a great self bow (his best I've seen shot 175 fps  Shocked ). Those reasults are with ligher arrows so they may be slightly slower, but you wouldn't really be able to tell.
 
Ben! good to hear from you again. It's a very simple process. I've made 3 so far. Baisically you heat up the pvc with a heat gun from the end of the handle down to one side and flatten it with a 2X4 and repeat with the other limb. Then you heat up the last six inches and bend/flatten that over a pot (8in across). Lastly you cut the nocks and you are ready to go. Average dimension for white 3/4in pvc is 48-50in long with a 4in handle. They range from 35-55 pounds depending on how much you flatten thm.
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Re: Awesome PVC bows!
Reply #10 - Jul 9th, 2012, 9:52am
 
That's quite interesting! You don't cut the tube lengthwise or anything, correct?
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Re: Awesome PVC bows!
Reply #11 - Jul 9th, 2012, 10:01am
 
I watched a bunch of the lad's videos last night.  Quite impressive!  I don't know if he's an engineer, but he thinks like one.
Many of the designs require no cutting at all; simple heating, bending, and flattening of the PVC material.  
 
I watched the construction of a heavy (80#) longbow, and he tapers the ends by cutting a notch out of the flattened section and then shaping together with heat... Finally applying shrink-wrap tubing over the whole thing.  Light, strong, and effective.
An 80# longnbow for a few bucks.
He has quite a few articles on arrow making, and even has a pistol crossbow that I admit I'm eager to try; my own crossbow has a red-oak bow that took me hours to produce and only pulls 50 pound.... A mere toy crossbow-wise.
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Dan
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Re: Awesome PVC bows!
Reply #12 - Jul 9th, 2012, 12:34pm
 
Quote from benkolmer on Jul 9th, 2012, 9:52am:
That's quite interesting! You don't cut the tube lengthwise or anything, correct?

 
He makes a lot of differnt one and some have- as Bikewer said- fancy cutting but most are just simple bows. Constructed along the lines of what I said.
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Re: Awesome PVC bows!
Reply #13 - Jul 9th, 2012, 3:31pm
 
Sounds fantastic! I don't have access to a heat gun, is there another way to do this?
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Re: Awesome PVC bows!
Reply #14 - Jul 9th, 2012, 5:25pm
 
One of his videos he just used an electric heating element that you could get from  your stove or a hot plate. He also said that gas burners work too but you have to keep the PVC a little further away.  
 
y'know I've been meaning to get a propane torch to make creme brulee (though my lovely wife for some reason very politely and subtly discourages my access to fire Wink ). One more reason to get one...
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Re: Awesome PVC bows!
Reply #15 - Jul 10th, 2012, 10:53am
 
I have been watching this guy for a few months. He makes a really cool survival takedown bow which can be broken down to several detachable pieces which fold up to take up very limited space. I have never seen anything like that before.
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Re: Awesome PVC bows!
Reply #16 - Jul 12th, 2012, 10:32pm
 
Way Cool! I may have to try this in the future. My last experience carving a bow ended with me getting it to the right pull, and 1 inch before I reach the draw I wanted, one limb snapped off. I was so mad I just left it lying there for a few months. Angry
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Re: Awesome PVC bows!
Reply #17 - Jul 13th, 2012, 8:38am
 
Quote from Kjev on Jul 12th, 2012, 10:32pm:
Way Cool! I may have to try this in the future. My last experience carving a bow ended with me getting it to the right pull, and 1 inch before I reach the draw I wanted, one limb snapped off. I was so mad I just left it lying there for a few months. Angry

 
When you are making bows you can't let that stuff get to you, it happens to everybody. It's really best if you have a few staves ready to go at all times so you hop right into the next project. These pvc bows are great for new bowyers, but they don't have quite the beauty and lure of a wooden bow.
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Re: Awesome PVC bows!
Reply #18 - Jul 13th, 2012, 11:17am
 
Everybody breaks bows when they are learning to make them, either that or you make a bow that is about right for a really skinny six year old girl.
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Reply #19 - Jul 13th, 2012, 3:38pm
 
I started my first bow with a nice, clear piece of poplar......I didn't do any research, so I didn't know that poplar has a nasty tendency to bend just so far and no further.....
The noise it made as I was "working" the stave on my new tillering tree was very loud....
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Re: Awesome PVC bows!
Reply #20 - Jul 31st, 2012, 10:16am
 
After watching a number of Backyard Bowyer's videos I decided to try his "youth recurve" bow just to get a feel for the process.   Besides, with my wonky shoulders I felt that 30 pounds wouldn't hurt me....
 
Only took about 1 1/2 hours total.   I had a heat gun, and quickly made the wooden flattening jig out of some scrap I had lying around.   The PVC cost me 1.75.....
I found getting the heat gun at exactly the right distance to soften the PVC was a little tricky... But once it started to go it was pretty straightforward.  
Keeping the limbs straight was the hard part.
Bending the recurves around a pot as the kid shows worked just fine.
I whipped up a bowstring on my home-made string jig and strung 'er up.... Seems to work just fine.
The bow actually assumes a pretty good "tiller" with the tapering, and the cast for a short, 30 pound bow is respectable.
I may sand the graphics off and paint the thing.
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Re: Awesome PVC bows!
Reply #21 - Jul 31st, 2012, 6:30pm
 
How about hand shock?  Seems like a lot of weight in the tips.
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Reply #22 - Jul 31st, 2012, 8:25pm
 
With this little bow it's hardly noticeable; I only fired off a half-dozen shots yesterday and it's back up over a hundred again today so I have been lazy...
I suspect one of the heavier models made from the larger-diameter pipe might be different.
 
Edit:
 
I did a little more shooting yesterday with some cheap carbon arrows from Walmart.   Pretty impressive.  The little bow draws easily yet has pretty decent cast due to the recurves.   Easy-shooting; very comfortable.  Would be even more so if I built up a proper grip.
The arrows were actually spined a little heavy, and tended to shoot off to the left a little but everything went to the same impact point.
The problem I was having was a tendency for the recurve limb-tips to bend a bit.... I suspect it was the 100-degree heat outside!    
Next one I do I'll take more care to get the limbs flat and absolutely straight.
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« Last Edit: Aug 2nd, 2012, 4:07pm by Bikewer »  
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Re: Awesome PVC bows!
Reply #23 - Aug 5th, 2012, 7:24pm
 
Quote from Bill Skinner on Jul 31st, 2012, 6:30pm:
How about hand shock?  Seems like a lot of weight in the tips.

 
As Bikewer said, It's almost non exisistant.
 
 
Bikewer, They do take a bit of adjustment. Try to postpone painting a couple days and heat up fix the tiller and any kind of propeller twist as much as is possible.
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Re: Awesome PVC bows!
Reply #24 - Aug 5th, 2012, 8:08pm
 
I may try that; I think I was working too fast and didn't let the tips cool properly so they're not as flat as might be.
I was just looking at the "simple" horsebow vid today... No flattening required and it draws 45 pounds or so in the 3/4" ID tubing.
 
I have to be careful; my shoulders are really giving me trouble and I think another trip to the ortho guy for some more cortisone is in order.
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Re: Awesome PVC bows!
Reply #25 - Sep 8th, 2012, 6:53pm
 
So what do y'all use for a bowstring? I tried a lot of different things, and the thing that I found worked well was good old baling twine (from a hay baler) It's plastic, so it melts pretty darn easy, but it's generally free if you know a farmer or rancher. It can be bought by the LARGE roll at most farm supply stores. I used it on a 20lb Bear Fiberbglass bow for years.
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Re: Awesome PVC bows!
Reply #26 - Sep 8th, 2012, 8:48pm
 
I just made a conventional bowstring....I still have a homemade string jig, serving bobbin, and plenty of Dacron string material.
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Re: Awesome PVC bows!
Reply #27 - Sep 9th, 2012, 12:52am
 
Quote from Bikewer on Sep 8th, 2012, 8:48pm:
I just made a conventional bowstring....I still have a homemade string jig, serving bobbin, and plenty of Dacron string material.

 
Not to hijack the thread, but is there a tutorial on that anywhere?
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Re: Awesome PVC bows!
Reply #28 - Sep 9th, 2012, 10:30am
 
I learned everything I know from either the Primitive Bowyer's Bible series or various websites like the Primitive Archer website and forum:
http://www.primitivearcher.com/smf/index.php
 
The jig is simple to build; you just need a few pieces of lumber and some wing-nuts.     Bowstring material is available from places like Three Rivers;   They recommend the traditional dacron for most "primitive" bows as the new stuff simply does not stretch... Quite a lot of shock to mere wood.
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Re: Awesome PVC bows!
Reply #29 - Sep 9th, 2012, 8:16pm
 
Quote from Kjev on Sep 9th, 2012, 12:52am:
Quote from Bikewer on Sep 8th, 2012, 8:48pm:
I just made a conventional bowstring....I still have a homemade string jig, serving bobbin, and plenty of Dacron string material.


Not to hijack the thread, but is there a tutorial on that anywhere?

 
http://www.youtube.com/watch?v=0Bmmv9aSuPc - Backyard Bowyer's tutorial
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Re: Awesome PVC bows!
Reply #30 - Oct 22nd, 2012, 6:05pm
 
Is there a particular reason you would need a particular type of bowstring instead of a thin 3 strand braid string like we use for our slings?  I would think original strings would have been made from something similar to jute, which I have a bunch of Smiley
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Re: Awesome PVC bows!
Reply #31 - Oct 22nd, 2012, 9:08pm
 
For weaker bows you probably could.  Most of those cords have a lot of stretch and you'll lose a lot of performance If they don't outright break.
 
A roll of B50 dacron can be bought for about the same price as any cordage ($10 or under) and you can make many long lasting high performance bow strings.
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Re: Awesome PVC bows!
Reply #32 - Oct 23rd, 2012, 7:03pm
 
Use linen thread, it must be waxed and twisted.  Jute and hemp may be strong enough, but usually, they are very large and when they are twisted into a bowstring they will be too large to fit the nock of the arrow.  Braids will work but the strands rub against each other everywhere they cross, and they cut each other, it makes the string very short lived.  And, as a rule of thumb, you want the string to be at a minimum, 4 times the strength of the bow.  If the bow pulls 50 pounds, (approx.22kg), then the string needs to break at at least 200 pounds (approx. 92kg) although, a factor of 8 is much safer.
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Re: Awesome PVC bows!
Reply #33 - Oct 24th, 2012, 7:16am
 
Quote from Bill Skinner on Oct 23rd, 2012, 7:03pm:
 Braids will work but the strands rub against each other everywhere they cross, and they cut each other, it makes the string very short lived.
AH. So that's why we still "twist" a lot of rope instead of braiding it or have the core and sheath approach. And why bow strings are multiple strands held together at the middle and the ends. I'd always wondered about that.
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Reply #34 - Oct 26th, 2012, 11:04pm
 
Braids also stretch a lot. If you insist on braiding a string (I have, as an experiment, haven't out it on a bow for some real use yet), when you are finished, anchor one end to something solid and stretch the heck out of it before you attempt to put it on a bow. I actually left one end "loopless" so I could make the nock loop where it was needed when I finish a bow.
 
I haven't tried twisting one. Growing up the best string I found was good old plastic baling twine, used in hay bales. Cheap, durable, and a little thick but it worked ok.
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Re: Awesome PVC bows!
Reply #35 - Oct 29th, 2012, 1:33pm
 
I purchased the stuff needed to make a couple of PVC bows.  I've had a heat gun for years (worked great for melting Kiwi to shine boots in the Army), so all I needed was PVC and the stuff to make the flattening jig.  For my first bow, I would like to find a cheap way to use a string to see if my bowyering skills are even worth buying the stuff to make a usable string.  Not sure if any of my Jute would be usable or not.  Or, to put this another way, I need to test this to make the fiancee believe I can make something before she'll be "ok" with me buying string making stuff Wink  For some reason, me spending money on hobbies isn't a good thing, but clothes buying on her lunch hour or on the weekends is perfectly fine.  So yeah, gotta please the woman first Smiley
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Re: Awesome PVC bows!
Reply #36 - Oct 29th, 2012, 4:00pm
 
Quote from GIMike on Oct 29th, 2012, 1:33pm:
I purchased the stuff needed to make a couple of PVC bows.  I've had a heat gun for years (worked great for melting Kiwi to shine boots in the Army), so all I needed was PVC and the stuff to make the flattening jig.  For my first bow, I would like to find a cheap way to use a string to see if my bowyering skills are even worth buying the stuff to make a usable string.  Not sure if any of my Jute would be usable or not.  Or, to put this another way, I need to test this to make the fiancee believe I can make something before she'll be "ok" with me buying string making stuff Wink

It looks like you can do a cord making... stuff out of some nails in a wooden plank :  
Have a look
and
here to see how to use it
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Re: Awesome PVC bows!
Reply #37 - Oct 30th, 2012, 1:17pm
 
That's a basic string jig.  It looks complicated but it really isn't.  It is a lot easier to learn if someone shows you how to do it than if you try to follow written instructions.  Youtube has a bunch of videos of varying quality, you will have to hunt through and find one that solves the particular problem you are having.
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Re: Awesome PVC bows!
Reply #38 - Oct 31st, 2012, 3:32pm
 
Quote from Dan on Jul 8th, 2012, 2:07pm:
Morphy his average bow has about the same fps as your averarge straight self bow or fiberglass bow (140-160fps), and his best performers are about equal with a great self bow (his best I've seen shot 175 fps  Shocked ). Those reasults are with ligher arrows so they may be slightly slower, but you wouldn't really be able to tell.

 
Hmm... not sure what to make of that without a gpp and draw length.  
 
That being said, I fully intend on trying this.  It's post-apocalyptic, which ups it's coolness factor by a huge amount in my book.  Grin If anyone has made one of these and can provide us with fps, gpp and draw length I would be very interested.
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Re: Awesome PVC bows!
Reply #39 - Oct 31st, 2012, 4:12pm
 
Quote from Morphy on Oct 31st, 2012, 3:32pm:
Quote from Dan on Jul 8th, 2012, 2:07pm:
Morphy his average bow has about the same fps as your averarge straight self bow or fiberglass bow (140-160fps), and his best performers are about equal with a great self bow (his best I've seen shot 175 fps  Shocked ). Those reasults are with ligher arrows so they may be slightly slower, but you wouldn't really be able to tell.


Hmm... not sure what to make of that without a gpp and draw length.  

That being said, I fully intend on trying this.  It's post-apocalyptic, which ups it's coolness factor by a huge amount in my book.  Grin If anyone has made one of these and can provide us with fps, gpp and draw length I would be very interested.  

 
At my 27inch draw, my sch. 80 pvc bow shoots a standard aluminum arrow with a starndard (100-125gr) field point a bit faster than my best self bow.
 
Granted that's very relative. But that can kinda give you an idea.
 
Baisically, it works. I have no doubt a pvc bow made like this could take a deer.
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Bill Skinner
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Re: Awesome PVC bows!
Reply #40 - Oct 31st, 2012, 9:56pm
 
What kind of arrow?  2117?  1816?  2020?  If you tell us what type, there are charts to tell grains per inch and tell us the length, we will know the weight of the arrow.  And aluminum will usually be the heaviest out there.
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Re: Awesome PVC bows!
Reply #41 - Nov 1st, 2012, 8:44am
 
Quote from Bill Skinner on Oct 31st, 2012, 9:56pm:
What kind of arrow?  2117?  1816?  2020?  If you tell us what type, there are charts to tell grains per inch and tell us the length, we will know the weight of the arrow.  And aluminum will usually be the heaviest out there.

 
 
I just checked, they are 28inch arrows and are 2117.
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Re: Awesome PVC bows!
Reply #42 - Nov 3rd, 2012, 9:01am
 
My first attempt at a PVC bow was with 1" pipe. Too heavy, and didn't work.
 
My second attempt, I had a sharp angle in one of the fades, and the limb collapsed when I went to string it. I checked out BackyardBowyer's tutorials on YouTube, fixed the collapsed spot, and when I tried for full draw, it collapsed again.
 
I went back, realized i had a twist in my jig, which made one side of the limb thinner than the other. I built a new jig, and use a half-round file to put a shallow notch in the end between the spacers. Haven't tried it out yet. Hopefully my oldest boy and I can try it out today.
 
By the way, I found out you can ask to look through the scrap bins at Lowe's and Home Despot and get wood for free. Nice if you just need pieces for jigs and such.
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Re: Awesome PVC bows!
Reply #43 - Nov 4th, 2012, 1:09pm
 
If it makes you feel better, My first couple pvc pipe bows didn't work either. I tried using 1in pipe that was only 48in long and it was way to strong/stiff. There's going to be failures just like when you make wood bows. The difference is that the pvc bow failure might take a day, while a wood bow failure can take more than a month.
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Re: Awesome PVC bows!
Reply #44 - Nov 6th, 2012, 3:05pm
 
Well, my first bow was a failure.  It kept looking slightly crooked and wasn't flattening properly.  I think I reheated it too much.  When I tried to grab the ends of the box and compress it, the way the string would, to see how it would look (and to show the fiancee who didn't believe it would look like a bow), one of the limbs collapsed.  Luckily I got a 10' piece and was able to start over again with a new one.  I found a 5' piece of 1 1/2" sch 40 which I flattened ok, but yeah, WAAY too much.  I think it would work better cut down to about 18"-24" and used as a prod for a crossbow.  That's my intention for it anyway.  Found a scrap 4' piece of 4x4 along with the pipe that I may try to fasion into a stock of some sort, and also some 1/2" dowel rod.  It's like somebody knew I was wanting to build a crossbow lol
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