SO YA WANNA BUILD A GLASS BOW ?

[kennym]

Here's what I got into on the riser plan....

 

The templates, one with curved top is what I'm going with, same 27" radius as the back of riser...


 

And what I did to leave hardware on the form and bandsaw it to new shape. Created other probs we will cover in a bit tho...

 

Now I'm going to skive the lams to make full length ones by gluing 2 in center. The simple skive jig for the ol disc sander. I'm gonna cry when this 25 year old veteran bow machine dies...

Just a block squared up and screwed to a base with room for the lams to sit on edge of base to keep all squared up. Make sure you get the lams where the sander disc doesn't grab and pull em on thru. Mine turns that direction, but they are far enuff so that the disc is pulling somewhat downward...


 

These are the .002 taper, but it works same for all of em, just slooowly slide em in together and grind one , then shuffle em keeping face same way and grind the 2nd one...

 

Heres what I had when first one was done and lams swapped places...

 

Ready to glue into full length..

 

I have an aluminum 1/4" x 1.5" straightedge I glue on to keep good and straight. A pc of wrap to lay em on and clamp the first one down so you only have to mess with one to keep straight...

 

[kennym]

Now apply CA to one lam in a thick coat, then position other on top, flip plastic over, put a little block on top of plastic and clamp, I clamp to bench because its easy...  :D  

 

I glued both surfaces on this set, too much squeezed out, so I cut back to gluing one surface on the next sets...

 

A little work with the sanding block and ready to go...

 

Now to prep the riser by grinding to proper fade profile, I do .065 at one inch and .140 or so at 2" with a nice sweeping curve....

 

Hard to get a pic lefthanded, and check both sides of riser in case your sander isn't perfectly square with sander table ..

 

Riser fade feathered end...

 

Here's the problem with top form mentioned earlier found during the dry run. ALWAYS do a dry run before glueup. I could have wedged during glueup but it is hard to see glue lines when they are full of glue!!

 

And the fix, wedges from some TD wedge making glued onto top form, will do another dry run when dry...

 

[kennym]

I probably didn't need the left wedge, may have to knock it off....

[kennym]

Got glue lines fixed, having probs not going to clear glass and some cool veneers! LOL

[Mad Max]

How thick are those lams?

first one off the new form.
Glue it up with that Brown glass.
Maybe some camo later.

[kennym]

I went with the stack for 45 lb on the original, thinking it might be around 50 with more deflex. Stack as follows:

2 - .040 glass
2 -.050 parallels
1 - .060  x .001 superlam with built in wedges both ends
1 - .115 taper  @ .002

[kennym]

Cut the glass to length and marked center on edge and tape....

 

Parts all laid out....

 

Here ya go David and Barry, and this was a bit too much for a 4 lam and 2 glass bow , just barely...

 

Ready to glue up, and Roy, the Dr. is in....

 

Glue on all surfaces that needed it and taped down somewhat on form. See my little block that helps set it in vise? LOL

 

Here is what was left in glue container...

 

[kennym]

I just use plywood rectangles for side blocks anymore, you might want something better if you build several bows off a form. LOL

Notice when I aired up, the corners dig into hose, this is a no-no. The glass won't lay down and you will get a thick spot on the limb. don't even ask how I know!!

Go back and loosen, move to fit (after air up) and tighten by hand.

 

Now go thru and wipe the glue down off limb edges where you can, you will thank me later for that! You can pretty much tear plastic and extra glue off and grind where the hardware is. ..

 

[Mad Max]

Nice
Cant wait

[Bvas]

Hmmmm. Looking good. But very curious how your gonna finish the riser out.

[kennym]

Me too Brad!! LOL

[Mad Max]

keep it simple

[kennym]

New form I'm wingin it! LOL

[Bvas]

Originally posted by Mad Max:
keep it simple

Too late for that. Lol

[Crittergetter]

Looking good!! I'm really curious to see how the new profile performs compared to the original one!!!

[Roy from Pa]

Looking good Kenny.

[arachnid]

Looking very good. You make ot look so easy Kenny

[LittleBen]

This build along is awesome. Makes we wanna build one

[kennym]

Thank you guys!!

It must be easy or I couldn't pull it off!    :D

Trying lots of new stuff this time, going with the 24 hour no heat set on the EA-40, I've got a reputable bowyer says it works fine. I absolutely hate leaving my heat box on when I'm not there....

[bowhntineverythingnh03743]

Looks great Kenny... I def like the modification you made to the riser. Looks more appealing then the flat on the belly side! looking forward to seeing the rest come together!