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Message started by walter on Feb 24th, 2019 at 6:23pm

Title: long bow in progress
Post by walter on Feb 24th, 2019 at 6:23pm
My first attempt. 70 1/2" n to n oak board bow. Tips are bending 5" with 30 lbs pull; ready to string @ 4" high with full draw weight of 50 lbs. I hope :D
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Title: Re: long bow in progress
Post by joe_meadmaker on Feb 27th, 2019 at 2:49pm
Looks good.  I like your tillering tree setup.  :)

One of my first bows was a board bow of red oak.  I ended up taking way too much off and it came out at about 23 lb @ 28".  I still have it and shoot it every once in a while.  It's fun because as you back away from the target, you really need to arc your shots.

Looking forward to see how your bow comes along.

Title: Re: long bow in progress
Post by Kick on Feb 28th, 2019 at 10:26am
I need to have a go at making a bow. I'm particularly liking the videos made by Mick Grewcock:

https://www.youtube.com/channel/UCr_zw4hK5YIIcE59-iymfxg

He's really good at making his videos informative and entertaining.

Title: Re: long bow in progress
Post by Sarosh on Feb 28th, 2019 at 2:01pm

Kick wrote on Feb 28th, 2019 at 10:26am:
I'm particularly liking the videos made by Mick Grewcock


I watch his videos for the shooting I like the high draw weights. For bow making, the traditional bowyers bibles are just the best thing you can spend time on.
I don't do archery :( don't have a place yet. so nowadays I try to figure out anchor points, form and aiming methods.
I can't find a video to explain how to draw and aim heavy poundage warbows (don't want to hurt my slinger's shoulders) . any suggestions?  :-?

@ walter

are you backing the bow?

Title: Re: long bow in progress
Post by joe_meadmaker on Feb 28th, 2019 at 3:02pm
I haven't seen any of Mick's videos before.  I'll check them out.


Sarosh wrote on Feb 28th, 2019 at 2:01pm:
the traditional bowyers bibles are just the best thing you can spend time on

^^^Totally agree with this.  Although I would says it's good to have a basic knowledge of bow making beforehand.  Some of the information can get a little hard to follow.

Another of my favorite bow making resources is a DVD you can find here: http://www.osageorange.com/.  He also has it listed on ebay.  It's a little pricey, but the detail it goes into is great.

@Sarosh, I haven't heard anything on heavier draw weights other than you have to work yourself up to them.  Like any other kind of weight training, you need time to build up the strength of your muscles, tendons, etc.  Once you're comfortable at a particular weight, you can increase it a bit.  One thing you can do with a bow that's a little heavier than you're used to is shorten up your draw length while your strength builds.

Title: Re: long bow in progress
Post by walter on Feb 28th, 2019 at 5:20pm
I'm not going to back it.  I do want to shorten it a couple inches as there is zero set so far and a 72" bow (tip to tip) is really a loongbow  :D

Title: Re: long bow in progress
Post by Mersa on Mar 1st, 2019 at 1:05am
I've had a go at a few primitive bows , morphy knows all to much .

Title: Re: long bow in progress
Post by Sarosh on Mar 1st, 2019 at 2:15am
build alongs might be a better help for a beginner but after 1 or 2 working bows i think it's a good time to read TBB vol1.
I started bow making after reading this http://poorfolkbows.com/oak.htm
my experience with fiberglass : don't ever use that again on a bow.


Title: Re: long bow in progress
Post by walter on Mar 3rd, 2019 at 5:16pm
50lbs @ 22". I made a 3 ply 15 strand b50 string for it.  Forgot how much b50 stretches. A couple more times on the tiller and I think it will be done.

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Title: Re: long bow in progress
Post by Morphy on Mar 5th, 2019 at 4:11am
Nice Walter. Is this your first ever bow or just your first board bow?

Title: Re: long bow in progress
Post by walter on Mar 5th, 2019 at 7:30am
First ever. Decided that 50lbs is still a little heavy for me.  Now shooting for 45@29". By the time the bow was pulling 50lbs @ 20", it had 3/4" of string follow (set?) measured  immediately after unbracing the bow at the tips. Hoping the bow  doesn't end up a 45lb bow with 50lb sf :-/

Title: Re: long bow in progress
Post by walter on Mar 13th, 2019 at 8:01pm
Got to spend about an hour  on my bow today. It is pulling 45# @ 24" now.  Bought another scale. They all lie, so now I check the weight on all 3 and divide by?  :-?   ;D

Title: Re: long bow in progress
Post by Sarosh on Mar 14th, 2019 at 11:58am
lol can't you just adjust one? :P

Title: Re: long bow in progress
Post by joe_meadmaker on Mar 14th, 2019 at 12:15pm
Do you have anything of a known weight to check your scales and see which one is the most accurate?

What kind of scale are you using?  I use something similar to this: https://www.amazon.com/American-Weigh-AMW-LS-110-Digital-LuGGaGe/dp/B00OVLH548

Title: Re: long bow in progress
Post by walter on Mar 14th, 2019 at 8:11pm
Sarosh, yes. It's called a hammer :)

Joe, two say 2 gallons of water weigh 16 lbs, but they loose it past 30lbs. Went to walmart and bought a six dollar luggage scale. It is reasonably accurate. I am also using my other inexpensive spring scale to average out the weigt. The costly digital scale reads what it wants when it wants. .

I can already tiller a bow (for me) by feel. If I can draw it 28" for hours at a time, it's just right :)

Title: Re: long bow in progress
Post by Sarosh on Mar 15th, 2019 at 6:24pm
haha a hammer big enough can be a solution to everything.

i use this kind of scale : https://www.amazon.de/ECD-Germany-H%C3%A4ngewaage-Analog-Forstwirtschaft/dp/B07L97PGG6/ref=sr_1_3?ie=UTF8&qid=1552688536&sr=8-3&keywords=hanging+scale+weight

only difference  max is 100kg

Title: Re: long bow in progress
Post by walter on Mar 15th, 2019 at 8:22pm
45lbs @ 231/2". Think I have a hinge :(

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Title: Re: long bow in progress
Post by Sarosh on Mar 16th, 2019 at 4:18am
i dont see it from the photo, there might be  picture distortion from camera.
I don't understand 231/2".

Title: Re: long bow in progress
Post by walter on Mar 16th, 2019 at 9:57am
23 and 1/2 inches draw length. It looks like there is a slight hinge on ghe bottom (right) limb just past the fades.

Title: Re: long bow in progress
Post by walter on Mar 18th, 2019 at 10:12pm
I have to keep droppng the weight due to disc disease and a hernia patch that I have ridged. Not much pain from either physical problem, but I really do not want  another hernia operation >:(.
I am at 45lbs @ 24 1/2" in this pic. Going to 27" and will sand the crap out of this bow, which is already sold. Next one too :-? Thknk I got rid of the hinge today.

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Title: Re: long bow in progress
Post by walter on Apr 10th, 2019 at 7:19pm
Hit a stone wall. aridity. serious lack of moisture in the air. Humidity as low as 26%. Highest was 51%.  LOL, draw length would decrease a couple inches every day @ 45lb.
Going to get a 4" diameter pvc pipe to keep a bow I am working on. Should be able to get and hold 50% in the tube.
Pic of braced bow and drawn to 22 @ 45lbs, which I believe to really be 28".

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Title: Re: long bow in progress
Post by joe_meadmaker on Apr 11th, 2019 at 9:51am
The moisture drop is a concern.  If the moisture content of the wood gets too low, the bow will more liable to break.  The PVC pipe idea sounds like it could work.  Another thing you might try is to put a coat of oil on the bow.  I don't normally oil a bow until it's finished.  But I don't see why you couldn't earlier.  Obviously as you're tillering, you'd need to re-oil that area when you stop for the day.

The bow is looking really good :)

Title: Re: long bow in progress
Post by walter on Apr 11th, 2019 at 7:08pm
Thanks joe. I want to stain this bow with cherry stain and then put several coats of some kind of varnish to slow down the evaporation rate or to keep it from sucking up too much moisture (it's supposed to be going to Minnesota).
But first, I have to rehydrate it back to 9 or 10% moisture content. Hence the pvc with several little tobacco humidifiers.
I knew I was going to have trouble with aridity, but it has dropped sooner and faster than I expected. By May and most of June, it will drop to 10 and even 6% :-/
Right now it is

2019-04-10_16_44_36-1.jpg (7 KB | 3 )

Title: Re: long bow in progress
Post by joe_meadmaker on Apr 11th, 2019 at 8:26pm
I see.  The PVC chamber is a good thought.  And if it does work well, that will certainly be beneficial for working on a bow over a long period of time.  I look forward to seeing it once you have it finished.

Title: Re: long bow in progress
Post by Morphy on Apr 20th, 2019 at 6:38pm
The hydration chamber is a good idea. I'm convinced shifting MC is one of the biggest unseen causes of bow issues, at least in the long term. Hydration Chambers let you keep the bow at it's original performance easier.

You may have considered these options but in your part of the country hickory is king. It will shrug off all but the worst MC abuse and shoot all the faster for it. If you want to get really evil with your design you can do boo/hickory or sinew/tempered hickory (which will shrug off virtually all MC issues, or sinew/juniper etc. Boo/Osage will also be good. White Oak is also worth a shot. I've gotten away with murder with it. Avoid yew, red cedar and other such woods. Red oak is also sort of an iffy one in those conditions but that largely depends on the grade you get. I once found a dark red board of red oak that felt as least as dense and heavy as an Osage board of similar dimensions. Still kicking myself that I didn't buy it.

Do you have any other bows planned? It's hard to build just one.  ;)

Title: Re: long bow in progress
Post by walter on Apr 20th, 2019 at 8:55pm
LOL, I have 3 more! Bought another board yesterday; started on it today. It's 1 1/2" wide x 3/4 x 6' southern red oak. Got the profile done today. Will work down the belly, floor tiller and cut in nocks tomorrow. That is the plan anyway.

Haven't seen any northern red oak or hickery here. Home depot does have birch, but I couldn't find a piece with close to straight grain.
What do you think would be a good finnish that would help keep moisture in?

Title: Re: long bow in progress
Post by Morphy on Apr 21st, 2019 at 2:29pm
I've always leaned towards spar urathane. It's everywhere, comes in a spray can for even applications and with 7 or so thin coats does a good enough job. That and your pvc pipe should pretty much take care of issues. When in doubt just add a few more coats.

I've seen some people who will dilute heavy duty epoxy with acetone and use a disposable spray applicator. I imagine that creates a pretty heavy duty coat. Super glue is another that takes awhile but I've seen good results with it.

Lastly you might consider marine spar varnish. Ive not used it but it's an intriguing idea.

Title: Re: long bow in progress
Post by joe_meadmaker on Apr 21st, 2019 at 2:56pm
I use a 50/50 mix of linseed oil and shellac.  Although this is more of a continual process rather than a one and done.  I give my bows a fresh coat every year or so.  The oil mixture smells really nice and the finish builds up over time.

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