So here is the bow that I started building from 4est trekker's build along and so far here is the beginning stages of my build and some a bit later
(http://i803.photobucket.com/albums/yy316/goosegossett14/bow%20making/bow0.jpg)
(http://i803.photobucket.com/albums/yy316/goosegossett14/bow%20making/bow01.jpg)
(http://i803.photobucket.com/albums/yy316/goosegossett14/bow%20making/bow02.jpg)
I've now got to the tillering part and I need some ideas as to what the bow is looking like... where to leave and take off some wood. Ideas from yall would be splendid. Here's the bow at 25" strung with a string the length of the bow. I'm thinking the left tip is a bit stiff but other than that I'm at a loss
(http://i803.photobucket.com/albums/yy316/goosegossett14/bow%20making/bow1.jpg)
I agree with vanillabear, goose. Rt limb is bending a little more.
Looks familiar.
Stan
Thanks for the input yall. Now for another random question... should I ever be pulling this bow past my intended draw weight? 50-55lbs @ 29" is what I'm shooting for and I'm still extremely wet behind the ears. Without the short string I had it 64lbs at 28" because I wasn't checking the weight ever before thinking I should. No cracks and for my untrained eyes I couldn't see any hinges or stiffness.
I did see that I should put it on a short string and take a 4" piece of wood and run it along the limbs and look for flat spots. Any other tips?
generally you want to get it bending about 10" at about 5 lbs under your draw weight, then move to shorter string. pulling more than your intended draw weight will cause it to take excess set.
So I just had some time to work on the bow and I'm getting closer but by no means am I done. Here's a picture with 5" of brace height and it drawn to 18". It's currently 40lbs at 18" and I can see some serious flaws but I would LOVE a trained eye to tell me where to take the wood off. I have some ideas but I want to see if the mesh up with some more "experienced" folks.
Thanks for the help so far and I might be afflicted more than addicted to this bow making stuff!
(http://i803.photobucket.com/albums/yy316/goosegossett14/IMG_0519.jpg)
(http://i803.photobucket.com/albums/yy316/goosegossett14/IMG_0517.jpg)
The gizmo knows. It allows me to see where to remove wood to get a more even tiller. I'm a noobie but I believe I have a better chance of success because of it.
indeed, the tillering gizmo is very useful.looks like the left outer third may be a bit stiff, but its hard to tell with the grainy picture.
So I had no clue what "gizmo" yall were talking about for the past few days. I even asked a buddy who shoots with me and he looked at me with a blank face like I didn't know what I was talking about. I still admit that I don't know what I'm talking about but I decided randomly to search gizmo... what do ya know there is such a thing as a tillering gizmo. I'll make one up and for sure the gizmo will show me how awful my first creation is.
it doesnt look too bad so far, and it being a pyramid design lends to easier tillering than any other design. you may just have small stiff spots that need light sanding.i have a barebones gizmo, a block with a hole drilled for the pencil to fit in. didnt have the need to make a fancy one, although im going to make a better one eventually with angled ends to get closer to the tips.
Your first creation isn't awful. In fact it looks pretty good to me. Granted, I'm a beginning bowyer, but your tillering so far is pretty even and that's what's important.
Jawge's given me the advice of keeping the bend well away from the handle so I'd tell you to make a line 2-3 inches either side of yours and not remove wood within that area. That leaves less of the limb to bend but will keep you from losing your grip, literally.
It's the same when you get to the tips; leave 5-6 inches alone until you've got no other option. You still have from mid-limb out to tiller but go methodically... use a scraper rather than a rasp and keep the edges rounded over so you don't raise a splinter. I mark the area to be removed with a squiggly pencil line then scrape the marks off, then blend that newly scraped section into the sections around it with a couple of scrapes.
After the scraping I restring the bow and exercise it on the tillering stick, gradually working my string down to where it was, then to its new location, but not all the way down right off the bat. After 20-30 flexes at this new, longer, draw length you can put the string in a slot and recheck (gizmo/photo.)
I hope this wasn't stuff you already knew.
Before you finish the tillering you want to do your finish sanding (back & edges) and rounding over the grip. That way any changes brought about are absorbed into the tillering and not something with surprise consequences.
Keep up the good work.
Joel
I've got it on a short string now. Braced 5 1/2" and pulling 42lbs at 22 inches so she's coming along. I'll have to get a picture using a camera that isn't my phone but I've halted progress until I make a "gizmo" to help with any issues. Thanks dublin for the info and I am trying to stay away from the tips and the handle best I can.
Either yall are way too nice or a pyramid bow IS fairly simple. Thanks for all the advice and I'll shoot an update when I get a chance to work on it.
lol the pyramid design relies on the fact that a piece of wood that is twice as wide is twice as strong, which is why they taper straight to the tips and are easy to tiller.
So after my Saturday looked like this...
(http://i803.photobucket.com/albums/yy316/goosegossett14/IMG_0522.jpg)
I didn't get much time to work on my bow until today. I made a "gizmo"and boy does that make a difference!
(http://i803.photobucket.com/albums/yy316/goosegossett14/IMG_0536.jpg)
I have it down to 50.5 lbs @ 28" and it seems to look good. Now I just have to finish sanding and put a grip and arrow rest on it to finish er out.
(http://i803.photobucket.com/albums/yy316/goosegossett14/IMG_0534.jpg)
Gosh my pictures are huge and I'm not wire savvy enough to fix em up on photobucket
Looks great!
looks god, glad you got the gizmo done and are getting the bow finished to your liking.
Looking good. Some questions for ya cause i plan on making on simular to your soon. How long is it ntn? How much set did it take? what is your girth at the handle and then at the nock? Can't wait to see a finished picture it looks great right now.
NTN it is 66" and it has about 2 1/4" set and I added the tip reflex/deflex extras on 4est's build-along so there might be a bit extra not including the extra wood on the tips. Handle is about 2" but I cut it with a coping saw because I didn't have anything else so there is some curvature that I left cause it felt nice. As far as the nocks I just went far enough in to make the string flush with the side of the bow. Hope that helps!
thanks