Models for grinding HSS Lathe Tools

[mikey]

Thanks, finsruskw, and welcome to HM.

A HSS fly cutter tool is simply a left hand turning tool, like our Square tool. Put a 1/32" nose radius on it and I'll bet it works well for you. Gotta' run to an appointment but try asking @ttabbal about it - he made one.

 

[benmychree]

Okay, a turning tool, facing tool and threading tool. This covers most general lathe operations. Anything else?

By the way, finishes are affected by the nose radius, relief angles and back rake. We'll make that clearer as we go along.

I never made a video, although I've thought about it.

In my high school machine shop class, we ground keystock tools until the teacher saw that we knew how to do it without wasting tool steel, we then received three new tool bits, ours for the class to be kept in our locker, the were ground into a roughing tool for turning, made with a chip breaker groove the full length of the cutting edge, a threading tool, and a ROUND NOSE or radius tool, used for radius and finishing work. with these three tools, we were able to make all the required projects for the term, a hammer, screwdriver and paper punch. I am suggesting that a round nose or radius tool be added to the list. We used 1/4" square bits normally and ground a full radius (1/8") on it and a side rake.

 

[mikey]

I am suggesting that a round nose or radius tool be added to the list. We used 1/4" square bits normally and ground a full radius (1/8") on it and a side rake.

John, are you referring to a round nose tool like this?



The one I use is like this one:



It has a 1/32" nose radius and no side or back rake. It cuts both ways and is really useful for between shoulders work.

Either one is useful but I'm not sure which one you prefer. We can certainly add it to our list. In fact, I think we should.

 

[WobblyHand]

I'm looking to acquire a lower cost belt grinder. The big 2x78s are over my budget, even in kit form. Anyone know if the Dayton 3/4 HP 2x48 belt grinder is any good? Dayton-grinder It's at Zoro and I've been emailed a 20% discount coupon. That puts it at < $293 with free shipping. It looks like a rebranded Palmgren. It looks like the platen needs to be replaced, since its 2.5" not 2", but as noted, it's best to use a ceramic glass platen anyways.

 

[mikey]

Never saw this grinder before but it looks good to me. The chassis is stamped steel but heavy, which is good. The right side of the belt is open once the cover is off and nothing is in the way that would impede grinding rake angles on a tool so that is a very good thing. The platen is removable, I think; if so, you can replace it with a good platen with a glass liner on it. And it's got 3/4hp, more than enough to grind tools and for general shop use.

Looks good to me!

 

[WobblyHand]

Going to place the order - discount is good.

 

[hman]

A possible alternative is a Multitool accessory for an existing bench grinder - 2X 36" belt, 7" disk.

Multitool USA

multitool-usa.com

 

[brino]

Please let us know how it looks!
-brino

 

[ttabbal]

Thanks, finsruskw, and welcome to HM.

A HSS fly cutter tool is simply a left hand turning tool, like our Square tool. Put a 1/32" nose radius on it and I'll bet it works well for you. Gotta' run to an appointment but try asking @ttabbal about it - he made one.

Pretty much exactly describes my HSS fly cutter. 15 degree LH square tool. I don't remember the radius, but 1/32 sounds about right...

 

[finsruskw]

I rec'd a piece of 3/8" HSS in todays post which I will set aside, and my son is picking me up some key stock this afternoon.
I'll use the info from this thread and see what I can come up with even though a have not a clue what I am doing.
I have a Sears 1/3HP bench top grinder and a Jet 4" belt sander so I think I am good to go in that dept.

However the most I can do for now, assuming I can grind a reasonable facsimile, is set it on the mill table and look at it!! Electrician still has not returned. I suspect he is being kept up at night fixing corn driers!!
If the offer is still open for the models, please include me.