Mike, what you need to see is in the attachment to this email from John Wilshusen.

/g/atlas-craftsman/message/107056

HTH!

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)

On Friday, April 17, 2020, 11:26:55 AM CDT, mike allen <animal@...> wrote:

??? ??? well I guess I'm not decent , or at least a decent machinist

??? ??? animal

On 4/16/2020 9:26 PM, Guenther Paul wrote:

Any decent machinist should know how to grind cutting tool for his machining job

GP

On Thursday, April 16, 2020, 7:33:53 PM EDT, mike allen <animal@...> wrote:

??? ??? any one have any pic's of the tool profile they use for makin pulleys ?

??? ??? animal

On 4/16/2020 2:46 PM, Dave Matticks wrote:

John,

Nice article! Procedure look good, I'd use different tooling but same idea.

Not going to make one for this episode but I have made a pulley or 2 in the past.

Trued up a couple die cast ones as well, some are near useless out of the box.

Not only made in USA but 2 miles from my house!

Dave

On April 16, 2020 at 1:02 PM "John Wilshusen via groups.io" <wilshusen@...> wrote:

Bruce,

One additional thing to add to your literature pile. ?I read and applied what i learned in this write-up when I was making the motor pulley for my lathe. ?You might find it useful as well.

?

?

Good luck!

John

?

On Apr 16, 2020, at 9:34 AM, Jim Irwin <jimairwin@...> wrote:

So you're planning to create a pulley, eh? I'd really like to see a video of that!?

Most of us have to settle for fabricating things.

On Wed, Apr 15, 2020, 7:00 PM Dave Matticks < dpm100@...> wrote:

Bruce,

Yeah, 7075 is expensive but 6061 would work better than fine. 7075 just cuts so nice.

Going cast iron is not going to save any money regardless of how you do it unless you pour it yourself!

They don't carry round 7075 but you might get a good price on 6061 from Clinton Aluminum.

McMaster Carr can surprise you sometimes.

Alro sucks price wise!

Have fun,

Dave

On April 15, 2020 at 7:46 AM exerpd+groupsio@... wrote:

Thanks all!

?

Glenn N – Yes, Robert Downs put this file in the files section.

?

Brad – How can 3-D printing & casting & machining be less expensive than the piece of aluminum?

?

Kay – Thanks for the Speedy Metals link.

?

Robert Downs / Guenther Paul – Thanks for the suggestions on how to machine it more easily.

?

Kay Davis / Dave Matticks – 7075 seems much more expensive than the other aluminum choices.

?

Craig Treleaven – Thanks for filling me in on the edits I make causing problems.? I get the update only daily, so do not have this problem.? The only times I do this instead of a separate post, is when I have grammar or formatting errors.? It seems like every group has different formatting defaults.? And in this group you cannot see what the final formatting is going to look like until AFTER you post.? Will try to be more careful.

?

So everyone understands, it may be a while before I create this aluminum pulley.? I will update everyone when I complete this or have questions.? Prior to November, I did not even own a lathe, so I am new to this & still learning.? What might be easy to some, is new to me.? I am going to a) wait a little while to see if I can locate an OEM 60-29 pulley.? b) If not, then I will do the aluminum pulley machining.? As was discussed early in this thread, I do not use the drill press constantly & it is working as is.? So this is not an immediate necessity.

--
Bruce Varner

?

?

?

?