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Main Boards => PowWow => Topic started by: RGK on September 11, 2007, 08:21:00 PM

Title: Dr. Ashby and my new heads
Post by: RGK on September 11, 2007, 08:21:00 PM
Of course I finished my last batch of heads before reading Dr. Ashby's report on the single bevel, so Tonight I made another head but simply ground one edge on each side. This head is also 165 grains. I hope to make more and test them soon. Here are the pics of both side of the head (although they look like the same pic)

   (http://i28.photobucket.com/albums/c239/212007154/arrows/singlebevel1.jpg)

   (http://i28.photobucket.com/albums/c239/212007154/arrows/singlebevel2.jpg)
Title: Re: Dr. Ashby and my new heads
Post by: Hatrick on September 11, 2007, 08:29:00 PM
They look pretty deadly to me. We need more specs. How about length, width, ferrule diameter.

Nice job.    :thumbsup:
Title: Re: Dr. Ashby and my new heads
Post by: RGK on September 11, 2007, 08:48:00 PM
Blade length 1 3/4 inch, Overall length 2 1/4, Width 15/16th, 11/32 ferrule.
Title: Re: Dr. Ashby and my new heads
Post by: Dr. Ed Ashby on September 11, 2007, 10:21:00 PM
Ron, they look a bit similar to the 125 gr. Abowyer. I might suggest you knock the tip off into a small Tanto design. The production Abowyer comes with a squared off tip similar to what you've got there, and they tend to chip the corners off frequently on bone impacts. Tanto stopped that, and also showed an improvement in reduced their tendency to skid on the bone's surface during angular impacts.

Do you know what the hardness level is? Sure looks like they'll work!

Ed
Title: Re: Dr. Ashby and my new heads
Post by: StanM on September 12, 2007, 01:17:00 AM
Truly beautiful work, Ron.  Whatcha use to paint them?

Stan
Title: Re: Dr. Ashby and my new heads
Post by: Falk on September 12, 2007, 04:17:00 AM
Lovely  :thumbsup:  
Would be willing to add one of each type to my collection.
Title: Re: Dr. Ashby and my new heads
Post by: RGK on September 12, 2007, 06:32:00 AM
Dr. Ashby. The material I use is M42 steel. Some of the hardest stuff around. I think it is in the RC65 to 70 range. I make fillet knives out of it mostly because it holds such a great edge. I don't think edge rolling will be a factor.

StanM, That is just cheap spray paint. I was experimenting with something other than gun bluing for a change.
Title: Re: Dr. Ashby and my new heads
Post by: StanM on September 12, 2007, 09:46:00 AM
I like it.  When you decide to put some up for sale...ah heck, don't sell 'em.  Then your hobby would be a job.  I'll have to see if I can make some myself.  Thanks for the pics.

Stan
Title: Re: Dr. Ashby and my new heads
Post by: Dr. Ed Ashby on September 12, 2007, 08:57:00 PM
Ron, I like the sound of that; R65-70. I've never worked with a BH that was over R57-R58. It will be interesting to see how it holds up to hard bone impact. If it's not so hard it wants to shatter or chip, the extra hardness will be a great asset, with the edge staying sharper longer during penetration.

Ed
Title: Re: Dr. Ashby and my new heads
Post by: RGK on September 12, 2007, 10:57:00 PM
After looking into this material, I see it max's out at RC69........ Still darn hard. It makes for a great fillet knife with wonderful edge holding ability yet a good amount of flexibility.
Title: Re: Dr. Ashby and my new heads
Post by: capt eddie on September 12, 2007, 11:06:00 PM
What taper do you have on it?  How is the blade attached to the ferrule?  I do not see solder.
Title: Re: Dr. Ashby and my new heads
Post by: Grayishhues on September 13, 2007, 01:09:00 AM
Looks to me like a field point that has been ground into a bullet shape, with a groove cut into the center for the point to slide down into.

BTW. RGK- You don't happen to go by Rancid Crabtree over on thebowyersden.com do you?
Title: Re: Dr. Ashby and my new heads
Post by: RGK on September 13, 2007, 06:29:00 AM
capt eddie, It is explained here.

 http://tradgang.com/noncgi/ultimatebb.php?ubb=get_topic;f=1;t=049889;p=1

Grayishhues, That would be me.
Title: Re: Dr. Ashby and my new heads
Post by: JC on September 13, 2007, 07:32:00 AM
Very impressive, precise lines considering you are doing it all by hand. Well done.
Title: Re: Dr. Ashby and my new heads
Post by: RGK on September 13, 2007, 05:35:00 PM
I am planning to start a new head that has a 2.25 : 1 ratio. Hope to have it made by the weekend.
Title: Re: Dr. Ashby and my new heads
Post by: hickstick on September 13, 2007, 06:07:00 PM
RGK   are you sure that is m42?   most bandsaw blades are either L6 or 15n20 (both excellent steels in their own right).   I've heard stories of folks trying to forge m42 and got nowhere except sore shoulders and elbows.   :)

or was the band saw blade the prototype and now you're using the m42?
Title: Re: Dr. Ashby and my new heads
Post by: RGK on September 13, 2007, 07:21:00 PM
The box the bandsaw coil comes in and on the blade itself is "M42". This is what we use to cut hardened steel and stainless steel. It is some tough stuff.
Title: Re: Dr. Ashby and my new heads
Post by: StanM on September 14, 2007, 01:13:00 AM
Looking forward to pics of the new heads.

Stan
Title: Re: Dr. Ashby and my new heads
Post by: robtattoo on September 14, 2007, 04:47:00 AM
*sigh* Something else I'm now compelled to have a go at making   :rolleyes:  

Seriously though, stunning craftsmanship. It looks far better than a lot of production heads in both design & finish   :thumbsup:
Title: Re: Dr. Ashby and my new heads
Post by: Mozarkid on September 14, 2007, 04:12:00 PM
Sweet!  The RGK-M42 Broadhead.

Sure would be something if a few found their way into Dr Ashby's hands before next years adventures...