Tillering and Glass Bows

[Mjl834]

I'm planning to build my first laminated wood and glass bow soon and have a quick question. Do these bows require tillering of the limbs? Perhaps to fine tune the draw weight? If so, what would be the best tool for the job?
Thanks

[Crooked Stic]

If you use accurately ground lams and you limb profile is even and a little bit of luck there should not need a lot of tillering. If you do need to tiller you can sand the strong limb corners a bit more than the weak limb . If it is really out then sanding the glass will help. but first make sure both limbs are profiled the same.

[Flem]

If you use accurately ground lams and you limb profile is even and a little bit of luck there should not need a lot of tillering. If you do need to tiller you can sand the strong limb corners a bit more than the weak limb . If it is really out then sanding the glass will help. but first make sure both limbs are profiled the same.

That about sums it up. Don't really need any tools other than a sanding block once the blank is profiled. Most of the engineering happens before you glue it up.

[kennym]

Yep, what they said! If the tiller happens to be off much, I mark every 6” down both limbs and compare widths on both . Usually you will find the prob...

[Forwardhandle]

I had the same question as you when I came here, I came from a back ground of tillering natural material bows , limb taper,thickness & side tillering etc , but with glass bows it's pretty much the same but the limb taper & thickness is all done prior to glue up ,where what's left is the front view profile & in some cases side tillering & trapping etc , I think of glass bows as internal tiller being in the internal parts & the detail in those for tiller, it's really not a complicated process , good luck with your build !

[Mjl834]

Thanks for the replies and information,  I'm really looking forward to building it.

Enjoy the holiday season