Author Topic: High School Shop Class Longbow Build Along (Read 12082 times)

wolfcoach · « **Reply #41 on:** December 10, 2018, 12:19:27 PM »

Here is the picture of the void under the glass.

Bvas · « **Reply #42 on:** December 10, 2018, 12:35:02 PM »

If I'm seeing correctly, the void is at the shelf?

I would finish shaping the riser first. Then mix a little osage saw dust with the smooth on and fill. This will help blend it in a little better.

On future builds.......Scarf joint the lams and super glue them together. That way they wont separate during glue up.

wolfcoach · « **Reply #43 on:** December 10, 2018, 12:48:50 PM »

Thank you for the advice on the scarf joint and super glue.

Flem · « **Reply #44 on:** December 11, 2018, 11:23:24 AM »

Can't tell from your picture exactly where the issue is? Looks like the lam that came up over the belly side of the riser, slipped down toward the tip? Can you describe, in detail where the void is, or better yet, post a close up picture.

wolfcoach · « **Reply #45 on:** December 11, 2018, 11:33:49 AM »

That is exactly what happened. I think we will be able to fill it with sawdust and smooth on mixed into a paste.

wolfcoach · « **Reply #46 on:** December 11, 2018, 12:07:53 PM »

First day shaping the limbs.

wolfcoach · « **Reply #47 on:** December 11, 2018, 12:08:20 PM »

Roy from Pa · « **Reply #48 on:** December 11, 2018, 01:26:01 PM »

Love it..

canopyboy · « **Reply #49 on:** December 11, 2018, 02:44:20 PM »

This is too cool. Thanks for sharing the progress.

wolfcoach · « **Reply #50 on:** December 11, 2018, 03:05:49 PM »

A few pictures of our progress from today.

wolfcoach · « **Reply #51 on:** December 11, 2018, 03:06:16 PM »

wolfcoach · « **Reply #52 on:** December 11, 2018, 03:06:37 PM »

fujimo · « **Reply #53 on:** December 11, 2018, 05:51:55 PM »

there are a couple of ways to stop the lams and glass from sliding.
1.one i learnt from kenny. glue about a 3/8" sacrificial strip ontop of the riser with a few dots of superglue- that helps the curvature of the hose from pushing the top lam down past the riser, it may push down past the sacrificial piece, but not down onto the riser.
2.you can put endstops at the tip end of the form, when you do your dry run, you trim all the lams and glass to exactly the right length, when you glue up, the end stop will prevent things sliding- kenny also did a cool spring loaded metal dowel end stop, that would adjust to varying stack heights.
Heck- just call ol'Kenny hell set ya straight....

fujimo · « **Reply #54 on:** December 11, 2018, 05:54:13 PM »

what BVas is referring too- is scarf joining the back lams together to make two 36" lams into one 72" lam.
your original pic did look like the issue was on the back of the riser- but i think that was just a lump of glue or sumpin'

wolfcoach · « **Reply #55 on:** December 13, 2018, 12:10:29 PM »

Shaping the grip and riser today.

wolfcoach · « **Reply #56 on:** December 13, 2018, 12:11:06 PM »

Roy from Pa · « **Reply #57 on:** December 13, 2018, 03:51:04 PM »

SteveD · « **Reply #58 on:** December 14, 2018, 05:54:11 AM »

Awesome Looks great

Pat B · « **Reply #59 on:** December 14, 2018, 09:54:07 AM »

I'd love to see his face right after his first shot. It's a pretty cool feeling.

I'm so happy to see schools using their heads and allowing bow to be built in Shop class. A bow is a tool. It's only a weapon if it is used as a weapon. A 10" cast iron skillet can be an effective weapon if it is used for one.

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Author Topic: High School Shop Class Longbow Build Along (Read 12082 times)

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