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Re: build along for my bro

PostPosted: Wed Jul 13, 2011 5:08 pm
by Dan
Now I am a bit spoiled to have a friend with a Bridgeport mill for my drilling tapping and riser limb pad machining.
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Re: build along for my bro

PostPosted: Wed Jul 13, 2011 5:10 pm
by Dan
The next step was to cut and grind some thin wood and phenolic to laminate together for the limb tips.
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I glued them all together with plastic rap on the limb surface to get the correct limb radius. Once they are cured I taper them on the spindle sander.
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Re: build along for my bro

PostPosted: Wed Jul 13, 2011 5:12 pm
by Dan
I then measure where the string groove is and prepare the limb glass before I smooth on the tip material for a cold cure.
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Next I lay out the limb shape and scribe it with a carbide scriber and cut it to shape on the band saw, I put on an old glass only blade for this. I cut very close to the scribed line.
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I then sand to the line on the 6”X89” Jet.
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Re: build along for my bro

PostPosted: Wed Jul 13, 2011 5:14 pm
by Dan
I made a simple guide for my string grooves to use with a chainsaw file, I was very happy with the results.
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I then relieve the file cut with a die grinder and 1” sanding drum.
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Re: build along for my bro

PostPosted: Wed Jul 13, 2011 5:16 pm
by Dan
Now it is time to shape the riser, I cut out the sight window with the band saw leaving the shelf high and staying away from the area where I would blend into the top limb.
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I used a ½” router bit in the drill press to flatten out the riser and bring the shelf down, this riser is cut to center.
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Re: build along for my bro

PostPosted: Wed Jul 13, 2011 5:17 pm
by Dan
I then used a 1/2” ball nose carbide burr to put a ¼” radius on the inside of the shelf/sight window.
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I then used a 40 grit 2” diameter sleeve on the spindle sander to shape the top of the sight window
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Re: build along for my bro

PostPosted: Wed Jul 13, 2011 5:19 pm
by Dan
I used a wood jig with the spindle sander with a 3” drum to hold a consistent angle on the limbs.
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Re: build along for my bro

PostPosted: Wed Jul 13, 2011 5:20 pm
by Dan
I mounted the limbs on the riser and scribed the phenolic, and started to shape the riser using the spindle sander and rasps.
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Re: build along for my bro

PostPosted: Wed Jul 13, 2011 5:23 pm
by Dan
My wife snapped a picture of me tillering the limbs and took another picture of me pulling the bow on the tiller tree.
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Here it is in the paint booth.
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Re: build along for my bro

PostPosted: Wed Jul 13, 2011 5:25 pm
by Dan
The finished bow specifications are. 62” 50# @ 30.5”
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