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Author Topic: Tips and tricks thread
kennym
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Thought we might start a thread with building tips, here is one to start for glass TD bow forms.

If you use a stop pin, drill an oversized hole deeper and put a spring under your pin to let it come up to the level of the limb thickness.

Put the limb against the pin(plastic on form of course)and the pressure strip can run right over the pin.

It adjusts itself to limb height so no slipped lams over the pin.

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Stay sharp, Kenny.

https://www.kennysarchery.com/

Posts: 11972 | From: Linneus , Mo. | Registered: Jan 2004  |  IP: Logged | Report this post to a Moderator
JamesV
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Kenny .......

That is a good idea but a little complicated for me. I use a couple of 5/8" sprig nails to hold the core to the riser.

James

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Posts: 2034 | From: Rolling Fork, Mississippi | Registered: May 2010  |  IP: Logged | Report this post to a Moderator
kennym
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James, this is my takedown form, it would be a little harder with a one piece!

But you gotta have a stop pin on this form anyway, so I thought why not make it where it doesn't let lams slide over the top of pin .

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Stay sharp, Kenny.

https://www.kennysarchery.com/

Posts: 11972 | From: Linneus , Mo. | Registered: Jan 2004  |  IP: Logged | Report this post to a Moderator
kennym
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And I noticed on the first set of limbs, the very end of the stack at wedge was rounded over a little, and didn't fit the riser pad as nicely as I wanted, so I put some shims past the pin from the stack to keep the hose and pressure strip from pulling down as much and rounding over. Hope that made sense!!

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Stay sharp, Kenny.

https://www.kennysarchery.com/

Posts: 11972 | From: Linneus , Mo. | Registered: Jan 2004  |  IP: Logged | Report this post to a Moderator
kennym
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Anybody else got any methods we can use?

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Stay sharp, Kenny.

https://www.kennysarchery.com/

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Roy from Pa
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Yup.
Posts: 11247 | From: PA | Registered: Oct 2006  |  IP: Logged | Report this post to a Moderator
Crooked Stic
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Yeah I got a couple. Need to retake pics being the originals were on PB that I closed out [Mad]

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Posts: 3132 | From: Princeton IN. | Registered: Dec 2003  |  IP: Logged | Report this post to a Moderator
Crooked Stic
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Here are a couple. I just redone this TD form. The old one had a lot of limbs run thru it and was showing it. Now I have this adjustable restraint for ! 1/2 forms to keep the pressure off the bolt holes.
And a tip overlay jig that can be used with a profile sander or Robo sander to pre bevel the overlays.
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High on Archery.

Posts: 3132 | From: Princeton IN. | Registered: Dec 2003  |  IP: Logged | Report this post to a Moderator
kennym
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Now that's what we need Mike!! This kind of stuff helps everybody! [thumbsup] [thumbsup]

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Stay sharp, Kenny.

https://www.kennysarchery.com/

Posts: 11972 | From: Linneus , Mo. | Registered: Jan 2004  |  IP: Logged | Report this post to a Moderator
Crooked Stic
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I got to thinking about your spring loaded pin there. If you could find a metal sleeve to about the right id for your dowell to put in there it would be bomb proof.

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High on Archery.

Posts: 3132 | From: Princeton IN. | Registered: Dec 2003  |  IP: Logged | Report this post to a Moderator
kennym
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That would be excellent for you guys who use a form a lot for sure! I'm using an arrow cutoff, so the bigger diameter helps and I only build prob 5 bows a year. Usually. Maybe.

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Stay sharp, Kenny.

https://www.kennysarchery.com/

Posts: 11972 | From: Linneus , Mo. | Registered: Jan 2004  |  IP: Logged | Report this post to a Moderator
Shredd
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I just mentioned this in an other thread so while it is fresh on my mind I will explain it in more detail...

If you are having trouble with your lams laying flat on your ramps there are a couple of things you can do...

1. Use thinner lams...Thinner lams will bend easier...

2. Make sure your space between the top and bottom form in the ramp area is not too wide... If it is, it may not put enough pressure in the ramp area to push those lams down... Don't make that space too narrow either... If you do it can cause your lams to shift and your forms to shift contorting the form and the bow being glued up in it...

3. Flatten out the last 3/4" to 1" of your ramp... When there is a curve and you are trying to make a lam conform to it you will notice that its easy to bend the lam except the last inch or two... If you ever taken a board and put it on top of two bricks... The further the bricks are apart the easier it is to bend the board and the closer they are it becomes more difficult to bend... Same with the ramp... When the ramp ends the two contact points get shorter and shorter causing it more difficult to bend the lam...

4. Change your curve... Put a tighter curve near the fades and a more open curve at the top of the ramp...

5. Attach a small block of wood to the top form in the problem area... The block should add more pressure to the area...

Here is a quick sketch I did to illustrate what I am talking about...

The top sketch shows the block of wood 'D' Attached to the top form...

In the top sketch area 'A' has a tighter curve than area 'B'...

In the bottom sketch area 'F' has a tighter curve than area 'E'...

In the bottom sketch area 'C' is flat...

I hope this helps some of you all...

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Shredd
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jess stuart
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Great tips guys. If you are like me you do everything possible to keep your bandsaw blade away from fiberglass. One way I stay away from glass is to cutout the sight window before I glue up the bow. I just wrap it with plastic wrap and put it back in place removing it later. Been doing it that way for years never had one stick so far. Only possible drawback is that it predetermines which limb is which but, that is easily accounted for by adjusting stack height if needed.
Posts: 1416 | From: Moriarty , New Mexico | Registered: Jul 2009  |  IP: Logged | Report this post to a Moderator
Crooked Stic
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If you have a thickness sander this gets you TD limbs nice and parallel and square and to width. A sled. just two 3/4 plywood screwed and glued then parallel them thru the sander and you are ready.
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High on Archery.

Posts: 3132 | From: Princeton IN. | Registered: Dec 2003  |  IP: Logged | Report this post to a Moderator
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