ok now its time to start thinking about a ball endmill

butcher_block

butcher_block

Joined
Dec 6, 2004
Messages
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well i got most the 2 knives that need "blood fullers" :D ground out but now i have to figger out the size ball mill i need any help would be great
least i know if i get the wrong one that MSC can have another for me in a day looks like i ll need something that spans 7/16 wide but no more then 1/16 deep so i know i ll need a mill much bigger then the 7/16 but im not sure how large or how to figger it out
hoping that someone out there can get me in the ball park
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thanks
butch
 
Have you thought about using the thick grinding wheels on an angle grinder to just grind in the fullers?
 
Butch, I don't know the geometry of ball end mills, but I can tell you that the circular segment described with a width (chord length) of 7/16" and a depth of 1/16" has a diameter of 0.828", if that's any help.
 
Terry_Dodson said:
Have you thought about using the thick grinding wheels on an angle grinder to just grind in the fullers?
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well no i didnt but that might be something to look into
i would still need to find a way to use it in the mill i have as everything needs to be spot on or least as clost to it as possable


hey fitzo i think you just made my head hurt with that dam math crap:D
should have seen me figgerin how to get the mill to sorta set the bevel ended up kind of setting it at 8 then hand grinding it 80 % to ajust
i didnt like how the milling was going
goingto have to work on that
thanks
butch
 
butcher_block said:
....hey fitzo i think you just made my head hurt with that dam math crap:D
...
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:D :D

if you liked that, Butch, then get a copy of "Machinery's Handbook" ....you can have migraines and throw up.....;) :D
 
wow, so u mean there's actually a use for this stuff theyre teaching me??? :P this is actually what we learned a few weeks ago in calc
 
mrstenoien said:
wow, so u mean there's actually a use for this stuff theyre teaching me??? :P this is actually what we learned a few weeks ago in calc
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i always thought the were full of it too "ill never use this crap later in life" hahahahaah
never did take calc but i ll be damed if i dont use math all the time


fitzo i am going to be getting my hands on the Machinery's Handbook one of these days
 
Let me tell you how we work math problems in Texas. First find a good looking female in your choice of Blonde, Redhair or Brunette and sweet talk her into figuring your math problems. Works like a charm. More fun than working with pen, paper and calculators too!!! :D
 
Anthony Chaney said:
Let me tell you how we work math problems in Texas. First find a good looking female in your choice of Blonde, Redhair or Brunette and sweet talk her into figuring your math problems. Works like a charm. More fun than working with pen, paper and calculators too!!! :D
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Yeah, that's true, Anthony, but one can get a lot of pens, paper, and a calculator along with a couple good math books for what one "figure" is gonna cost ya with one of them sweet talk jobs. :D

Sometimes doing it yerself is the best answer.....;) So to speak, of course....
 
Now guys,Don't you wish you had paid attention in math class,instead of looking at Mary-Lou's ass!
Stacy
 
Here is something Mary Lou might not think of. I have to make ribs for rifles every so often and if I don't have a ball mill of the size I want I just tip the head on my mill and use a square ended cutter. You can get any sort of radius you need this way. Works for me. Good luck
 
Pete Allan said:
Here is something Mary Lou might not think of. I have to make ribs for rifles every so often and if I don't have a ball mill of the size I want I just tip the head on my mill and use a square ended cutter. You can get any sort of radius you need this way. Works for me. Good luck
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that would be great if i could figger out how to get the nice round ends on the fullers
if my math is right and im not say n it is the cutter would have to be something like 3 1/8 that is if the ball radius is half the di of the mill bit and i dont thing i can pay out that kind of cash or even find something like that
goingto have to look at die grinder ball ends today to see what it might take to reshape a few
butch
 
I thought he was talking about using a 7/16" flat cutter end mill bit and putting the blade in legnth wise to make the fuller with the 7/16" rounded end on one end, flip the blade around to make the rounded end on the other end of the fuller.
 
Using a 7/8 ball end end mill and cutting 1/16 deep, would leave the groov .450 wide. If the width is 7/16, the depth would be .058..........why do the math when I have AutoCad?
 
Tinker Simpleton said:
. If the width is 7/16, the depth would be .058..........why do the math when I have AutoCad?
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no fair cheater (can you show me how to use autocad maybe a copy of it that fell off a truck;) )
i ll have to look and see what mill i used i did run it at 30 degrees off vertical
it worked mostly good i got to get more time on the mill
butch
 
nevermind....I didn't figure anything wrong after all. That said, cutters don't come in 0.828" size. :o
 
Fitzo's advise struck a chord with you guys.
Unless you are dealing with mating parts (which a fuller is not) just use either a 3/4" or 7/8". I would use the 7/8 and just cut to the desired depth.It will be a few thousandths wider than the design specs,but otherwise will be fine.
Stacy
 
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