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Main Boards => The Bowyer's Bench => Topic started by: rmorris on April 14, 2012, 11:57:00 PM

Title: Making the Bingham Drilling Jig work!!
Post by: rmorris on April 14, 2012, 11:57:00 PM

For years now I have had problems with the Bingham drilling jig (BDJ). A few nights ago I thought up a way to fix the problem and here is how I did it.

First off you will need to use the BDJ to drill your riser . Get it as close to center as your BDJ will allow , I will show you how to adjust for error in a second.

Now once your riser is finished with the insert and dowel pin. Mark a centerline on your limb just where the BDJ will go.

 (http://i1229.photobucket.com/albums/ee465/buckskinbows/af4852f5.jpg)

Now attach the BDJ as you normally would makin sure the 5/16"  hole is as close to center as possible , and try to line up the 1/4" hole as much as possible.

 (http://i1229.photobucket.com/albums/ee465/buckskinbows/e25e7b30.jpg)

Notice that I cover up the holes I am not using so I don't dril in the wrong hole.
I then go to the drill press and only drill the 5/16" hole.

 (http://i1229.photobucket.com/albums/ee465/buckskinbows/62f22b78.jpg)

Title: Re: Making the Bingham Drilling Jig work!!
Post by: rmorris on April 15, 2012, 12:04:00 AM

Alright , now if you lay the limb and the riser next to each other you will notice you can place the BDJ on the riser and with a slightly longer 5/16" screw.

 (http://i1229.photobucket.com/albums/ee465/buckskinbows/1097f498.jpg)

You can now attach the limb with the BDJ attached to the riser with the longer 5/16" bolt

 (http://i1229.photobucket.com/albums/ee465/buckskinbows/7b440490.jpg)

Title: Re: Making the Bingham Drilling Jig work!!
Post by: rmorris on April 15, 2012, 12:12:00 AM

Now all you have to do is mount you riser and limb so you can put a laser on it.

 (http://i1229.photobucket.com/albums/ee465/buckskinbows/e875b485.jpg)

Once you get the laser centered on your riser us the set screws to adjust the alignment of the limb.

Once you get the alignment correct take the limb and the BDJ off together and then drill the 1/4" hole for the dowel pin. You will now have a perfectly aligned limb on your new bow... Repeat for the 2nd limb.

 (http://i1229.photobucket.com/albums/ee465/buckskinbows/b57bb186.jpg)

Title: Re: Making the Bingham Drilling Jig work!!
Post by: fujimo on April 15, 2012, 12:36:00 AM

awesome, thanks.
what laser do you use- the one i was using was very ineffective!

Title: Re: Making the Bingham Drilling Jig work!!
Post by: rmorris on April 15, 2012, 02:15:00 AM

Wayne, The one I use is from Lowes and is their house brand. i think it cost me about $30.

Title: Re: Making the Bingham Drilling Jig work!!
Post by: jess stuart on April 15, 2012, 09:37:00 AM

That is a great idea, thanks.  I will have to drag my old BDJ out and give it a try.

Title: Re: Making the Bingham Drilling Jig work!!
Post by: fujimo on April 15, 2012, 01:59:00 PM

thanks Ralph.
thanks for the fix-a-long.
will use mine in future- never used it because i am a measurin' freak!!!
and figured i could get more accurate on my own without the jig- but geuss i'll drag it out and try it!

Title: Re: Making the Bingham Drilling Jig work!!
Post by: rmorris on April 15, 2012, 02:16:00 PM

If for some reason you were to have 2 BDJ's you would be able to align the entire bow in one attempt , then drill the dowel pin holes.

Title: Re: Making the Bingham Drilling Jig work!!
Post by: 6feathers on April 15, 2012, 02:43:00 PM

Great idea, I have struggled in the past trying to get things lined up.  I even went to building 2" limbs (riser 1.75") so I had lots of room for measuring errors (and lots limb width to grind).  Can't wait to try this.

Title: Re: Making the Bingham Drilling Jig work!!
Post by: TX FLY CASTER on July 22, 2015, 10:31:00 AM

Has anyone tried this method for the Bingham Jig? Just curious to find out if the results are better than using the jig per the instructions?

Title: Re: Making the Bingham Drilling Jig work!!
Post by: talkingcabbage on July 23, 2015, 02:53:00 AM

Oh yes.  I have, and it works great.  I ended up making my own jig out of corian and making sure everything was centered, and it works much better.  But this method works great.

Title: Re: Making the Bingham Drilling Jig work!!
Post by: TX FLY CASTER on July 23, 2015, 12:56:00 PM

Great thanks !!!!

Title: Re: Making the Bingham Drilling Jig work!!
Post by: Full Draw Too on July 25, 2015, 08:51:00 AM

Thanks so much! I can't wait to try this...very brilliant idea!

Title: Re: Making the Bingham Drilling Jig work!!
Post by: JamesV on July 26, 2015, 04:14:00 AM

Why does Bingham's even market a tool that doesn't work properly?