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Korean horn bow. while im waiting...

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superdav95:
Here is a project I have been working on for a little bit on the sidelines while working on my 2 other horn bows. It’s a modified Korean horn bow. Its core is bamboo and horn is It’s little longer than traditional Korean horn bows. It’s going to be around 54-56” depending on how things go with poundage estimates. I’m aiming for 50-60lb bow at 28”. So at 30” may be in the range I’m aiming for for full draw. If I feel like it can do more and isn’t stacking too bad I’ll go further then 30”. I’ve never made a Korean style bow before so some experimenting going on here. It sits around 33mm widest part out of handle then very slightly narrows to 25mm at the tips. I have some wiggle room for length at the tips. The thickness now is just around 9mm on main part of bending limb section with core wood and horn. The horn tapers towards the tips and thickness increases overall to about 10.5mm. I’m planning to sinew this with approx 65-70 grams of sinew. I’m estimating that sinew thickness after both layers will be around 2-3mm thick giving me an overall thickness around 12-13mm. Should be interesting where I end up with my poundage and how close I’ll get to my goal here. The tips of the core were soaked and steam bent the recurves. The limbs were then heat treated/belly toasted and rebound flat and grooved for horn. The nodes placement was a key consideration for me as well. So I used a pair of matching limbs from same section of moso pole bamboo that was prepped. The main bending portion of each limb is identical and have no nodes in that section. Over the last 3 days I have been preparing the backside of this little bow for sinew. I used 28tpi groover blade to score the surface after removing all of the rind. I then sized the back with sturgeon glue 5% for 12 coats until shiny. I know this is likely overkill but figured deep penetration of thin glue may save my bacon on this bamboo. After three days of sizing it looks good and clean and saturated. It’s ready for its first layer of sinew! I’ll be using 25% sturgeon glue for the sinew layers. I like to do premeasured bundle/strips for each limb. I’ve tried sinew many different ways and for me this is the smoothest/cleanest look. I pre soak and clean and comb out each bundle on a board just slightly wider then my limb. I let it just rest long enough to gel a little then apply fresh glue with little radiant heat to adhere well. I then smooth it out with my fingers. Can’t remember where I first saw this method or who to give credit to but whoever you are… thankyou! lol. I do like this method. Here are a few pics

Mad Max:
Looking good :)

I made a glass 48" Korean from a tracing I got from James Parker, 14" of reflex
It was a fun project 8)

superdav95:
Thanks.  Ya they are very interesting bow design.  I made this one a little longer for my needs.  I hope it doesn’t blow up! 

superdav95:
60grams of sinew so far.  Will need a little more I suspect.   Likely another 30-40grams. 

https://imgur.com/a/ff2eGic

Mad Max:
Tape adhesive on the sinew?
Are you going to sand the sinew before the next layer?
For my information ;)
Looking good

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