For those that are sharpening challenged like me, here a basic jig I made to change Grizzly's grind angle to 25 degrees as Dr. Ashby's recommendation. Cut a 2x4 off on a table saw to 25 degrees. Trace the blade with one angle flush and chisel out some relief for the ferrel to sit flush. Then position half of a 2"hinge so the screw holes will clear the blade and mark the holes. Then drill for 2 threaded inserts from Lowes or Home Depot and get appropriate size round head machine screws. Below is the jig from a couple of angles.
(http://i78.photobucket.com/albums/j87/SOS_321/GJig.jpg)
(http://i78.photobucket.com/albums/j87/SOS_321/GInjig.jpg)
Position the blade flush with the edge:
(http://i78.photobucket.com/albums/j87/SOS_321/GAlign.jpg)
I place the blade flush with the sanding disk and adjust the miter so it is flat to the side. Helps keep it aligned.
(http://i78.photobucket.com/albums/j87/SOS_321/GSquareDisk.jpg)
Turn on the disc and feed it slowly a little at a time so not to overheat it, until you've cut an even edge.
(http://i78.photobucket.com/albums/j87/SOS_321/GGrinding.jpg)
And "Voila".
(http://i78.photobucket.com/albums/j87/SOS_321/GFinishedEdge.jpg)
You can even make a little angle guide to help re-do the tip.
(http://i78.photobucket.com/albums/j87/SOS_321/GTip.jpg)
I then use a slightly modified Gatco sharperner for final dressing and polishing of the edge.
Good luck.
One more suggestion - before grinding, file the back side of the blade perfectly flat and free of any burrs prior to grinding.
Thats pretty cool and easy.
Thanks,
Todd
Nicely done! :clapper:
Awesome. I just may be able to sharpen one of those yet.
"You is intelligence", Steve. Good job!
Very nice indeed Sir! :readit:
Ron
Nice work.. Great idea :thumbsup:
Good Job Steve. Thanks for posting this.
Good Job....
Now make about a Bazzilon of them and pass them out....
Well done Steve...too bad I ain't got all them fancy wood working tools like you famous bow builders.
Great job... thank you.
ChuckC
BRAVO!!!
Just might have to build me up one of those!
Mike
That's me JC - $99 dollar Craftsman closeout including shipping, $75 second hand band saw with 6 blades and a $42 drill press from Harbor Freight....them there some fancy tools! Table saw is free....my neighbors!
Great idea even for one who's life gift is wrecking stuff. I think I could make this. Thanks
Bill
this is a sweet idea
Built me a SOS jig to try on some unground Stos 160 gr heads I had laying around... the area right at the junction of ferrul metal and broadhead metal isn't as smooth as SOS's, but I am still adjusting the jig...
Mike
ttt
Gotta say, the Grizzlies are looking good on my GT's for Africa in two weeks...
(http://i78.photobucket.com/albums/j87/SOS_321/P1030558.jpg)
And they shoot pretty good with high FOC. Three almost touching - the one slightly to the right is a field point for comparison....
(http://i78.photobucket.com/albums/j87/SOS_321/P1170019.jpg)
Needless to say, I quit trying to shoot groups after that.
Good job Steve,and good luck in Africa!!
Do you notice the twist of the blade when pulling them out of the target? Mike
It's very nice.
Just a question, are you at all concerned of overheating the steel?
Ithink the Doc uses the same method and saya you have to cool the head every so often. I am sure you could easily overheat the metal. Neat rig though, right now besides typing on this puter I am sharpening some 160 grizzlies on a file. makes that jig look even prettier.
J
Mike,
there's a definite clockwise twist in the foam blocks.
I took it real easy with the sharpening. Just a touch and pull back, etc. I did a couple with file and took forever and uneven, thanks to my lack of skill.
If I didn't tell you earlier, be sure to flatten the back of the blade first before cutting the bevel....key to a sharp edge.
QuoteOriginally posted by J-dog:
Ithink the Doc uses the same method and saya you have to cool the head every so often. I am sure you could easily overheat the metal. Neat rig though, right now besides typing on this puter I am sharpening some 160 grizzlies on a file. makes that jig look even prettier.
J
I agree. I also use a file and it takes forever. :(
Looks like another great way to sharpen these broadheads.
Cool!
Nice jig, I have some old style Grizzlies I'll have to give it a try.
I just bought some new Grizzlies, they come with the 25 degree grind and the Tanto tip. It took me about 5 mins with a Smiths Sharpener to have the new ones shaving sharp.
I made the same jig. What grit sand paper are you using I found 220grit at sears but am thinking about finding a body shop that might have upwards of 1000 for super sharp edge
A while back I became a Grizzly convert and then ran into the "how do you sharpen 'em" problem like many others. I found this thread and thought this looks like one of, if not the best methods for getting the grind angle correct and consistent. The only problem was I don't have a belt/disk sander, however I do have an old 7" Craftsman table saw my father-in-law gave me several years back.
Using good ole American ingenuity I came up with a pretty good alternative to the sanding disk used in this thread. I bought a cheap plywood saw blade and used my angle grinder to grind off all the short little teeth, making it into a toothless, round metal disk. I then glued some 200 grit sandpaper disks to the sides, using gorilla glue smeared all over the surface. I laid the new sanding disk between a couple of flat steel plates I have to make sure it dried without any bubbles or bumps and to make sure it stayed put when spinning. After waiting a couple of days I cut out the center hole and installed the disk in place of my usual wood cutting blade and turned the saw on, standing to the side just in case the sandpaper disks didn't hold. I'm happy to report they did and have to this day.
If I had our camera here I'd take some pics so folks could get a better idea of this alternate sanding disk - my wife has it on a trip out of town. So, if anyone has wanted to use the sanding disk method for sharpening their single bevel broadheads and don't have a belt/disk sander but do have a table saw, I hope this might be of some help.
And lastly, thank you Stephen, for providing the excellent thread and photos for making it so much easier to get these broadheads sharpened. I, like many others, tried using the metal file method and just couldn't get the end results I wanted. Now I can and do. The only thing I have left to do is use my paper wheel on my bench grinder motor to put the finishing touches on these broadheads and I'll have them "hunt ready".
The great thing is the NEW Grizzly's have that angle all ready! No SINNING WHEELS OF SHARPENING MUTILATION needed. :D My KME broadhead sharpener has worked great so far and I know several others have found methods that work also. I only wish I had the talent or the security to work with the tools some of you guys work with. :help: :notworthy:
i just rout a 2x2 to cradle the shaft, and shape one end to the pattern of the arrow tip, that way you can hold it firm and file the edge, all the work goes into the steel instead of being lost to vibration and such.the file doesn't recognize the wood,and you can really cut in good at any angle.
We tradgangers are such innovative people! Well done sir