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Main Boards => The Bowyer's Bench => Topic started by: D.A. Davis on March 10, 2014, 08:39:00 AM

Title: Question I should Know the Answer To
Post by: D.A. Davis on March 10, 2014, 08:39:00 AM
For you guys that grind your own tapers, is the rate of taper ground on one side only?  Or, is the material ground on both sides equally to achieve the desired rate of taper?
Title: Re: Question I should Know the Answer To
Post by: Trux Turning on March 10, 2014, 09:08:00 AM
I end up flipping mine as I reduce them so I guess that means both sides
Title: Re: Question I should Know the Answer To
Post by: Jorgy on March 10, 2014, 12:13:00 PM
I flip mine,mostly to take the bandsaw marks out.
Title: Re: Question I should Know the Answer To
Post by: Roy from Pa on March 10, 2014, 03:00:00 PM
This is something I have never even thought about, but it makes sense... Gonna try it on my next tri lam...
Title: Re: Question I should Know the Answer To
Post by: bigbob2 on March 10, 2014, 06:08:00 PM
Yup flip mine also.
Title: Re: Question I should Know the Answer To
Post by: kennym on March 10, 2014, 06:59:00 PM
I saw them at the proper taper rate with a 2" wide sled up against the fence, then grind both sides .

Then you don't have to grind as much as from a parallel, and the grain matches better too.

I start .040 over desired thickness...
Title: Re: Question I should Know the Answer To
Post by: jsweka on March 10, 2014, 07:13:00 PM
Why would it matter other than to get out any imperfections caused by a sander & sled that aren't perfectly parallel to one another? -Maybe just to sand both sides for glue adhesion, but I can't think of any other reason.  The resulting taper is still the same.
Title: Re: Question I should Know the Answer To
Post by: kennym on March 10, 2014, 08:52:00 PM
After re reading your ? , what John said!  :)
Title: Re: Question I should Know the Answer To
Post by: Roy from Pa on March 10, 2014, 09:03:00 PM
Johnny Boy, The taper is the same on one side but the other side is flat, so the bow could shoot high or low depending on the angle of the hyper extended fibula..
Title: Re: Question I should Know the Answer To
Post by: kennym on March 10, 2014, 10:13:00 PM
Sheeesh! Thet's perty technigal fer a non-glass feller Roy!

You try that sand yer conveyor trick yet?  :D
Title: Re: Question I should Know the Answer To
Post by: mjwhitby on March 10, 2014, 10:26:00 PM
You wouldn't happen to be the D.A.Davis from ASU would ya?
Title: Re: Question I should Know the Answer To
Post by: jsweka on March 10, 2014, 10:39:00 PM
QuoteOriginally posted by Roy from Pa:
Johnny Boy, The taper is the same on one side but the other side is flat, so the bow could shoot high or low depending on the angle of the hyper extended fibula..
Ah ha...I see the light now, Roy.
I guess that's why I'm a biologist and not an engineer    :laughing:
Title: Re: Question I should Know the Answer To
Post by: Roy from Pa on March 11, 2014, 05:49:00 AM
Yup Kenny got the belt tapered on one side..  :)

Johnny I didn't know you wuz ah bolojister..  :)
Title: Re: Question I should Know the Answer To
Post by: Bowjunkie on March 11, 2014, 06:04:00 AM
Tapered is tapered. The only way the piece would know if it was done 'evenly', by removing material equally from both sides, would be how the ground angle relates to the butt end's square cut on half length lams... virtually meaningless since the difference is so minute, and they're generally recut at an angle to be spiced anyhow.

I grind, flipping them until all saw marks are removed, then grind to thickness and taper.