Cut Knurling tool in March/April issue

[Bill Pace]

We didnt get the pix ... try it again

I'm also underway on making the knurler -- I'll take a shot at what youre asking. For one thing, getting my poor brain around getting the holes in their proper places with that 30* angle --- well, lets just say that I made several "prototypes" before I had what I needed

The hole will be .50 x .196. My problem is what is the size of the hole that goes thru the spindle housing?

The only hole that goes through the housing is for the spindle--the hole on the end is .375 X .375 with the threaded part in the bottom of it, this will house the gears? to allow adjustment of the 2 knurl wheels, to be described in the next issue (at least thats my understanding)

[dp]

What does it look like in use? Anyone have a video?

[gr8life]

Thanks the reason you got no pix was because I forgot to load it. Got to run be back later.
thanks
ed

[Mcgyver]

I'm thrilled to see these under construction - keeping my fingers crossed no more errors emerge!

Ed the 5/40 hole is blind, its to hold the gears in place. the lag between building and the article being printed means i have to go back and read to remember, but i'll do my best to help. Study the cross section in Figure 2, you can see where the tapped 5/40 hole doesn't come quite as far as the angle bore for the spindle...does that help?

[gr8life]

Sorry I could not get back to you sooner, thanks for the replies. I left the part centered in the 4 jaw w/ a .50 x .196 hole in it. If I get it correctly I am now going to make a .375 hole thru the piece?
Sorry to take up so much time.
thanks
ed

[Bill Pace]

I left the part centered in the 4 jaw w/ a .50 x .196 hole in it. If I get it correctly I am now going to make a .375 hole thru the piece?

No -- sounds like you are wanting to do what I did on 2-3 pieces and messed them up.

In fact I think you have already done the piece in the pic wrong, the .50 hole has to be drilled at the same 30* angle and cant be done with it in the 4 jaw on the lathe. You'll have to take it back to the mill and re-set it at the 30* and drill/ream/bore the .50 hole only .187 deep for the bearing to seat in and the rest of the way thru at 5/16 for the brass bushing to seat in. Then you can put it back in the lathe to do the .375 hole.

Hope I'm describing that right .... like I said, it messed with my head for a while---

[gr8life]

Now I am completely confused. Pix. #21 clearly shows the piece being centered in the 4 jaw on the lathe. Why would he center it on the lathe then move to the mill?
ed

[Bill Pace]

The pic does show it in the lathe, but it doesnt show the hole being done, only the flattening off of the 30* I think thats what threw me too.

After I messed up 2 pieces, I just bypassed the 4 jaw and trimmed the 30* off in the mill vise with a 1" end mill, that was quicker and easier than the 4 jaw. Then I could just reposition the jig and do the spindle holes...

Now gotta go, will be back in morning...

[Mcgyver]

Now I am completely confused. Pix. #21 clearly shows the piece being centered in the 4 jaw on the lathe. Why would he center it on the lathe then move to the mill?
ed

....what I did (this all described third paragraph from the bottom page 20 and onward) was set the block in the lathe and face the housing so its at 30 degrees pic 15&16)....in my process the housing doesn't see the mill and the fixture doesn't go back to it either - Bill did so because he used the mill instead of the lathe to cut the housing to 30 degrees, ie what i did in the lathe in pic 15/16 he did in the mill. Then, without taking the housing out of the fixture, the bore location is done on surface plate, photo's 17-20. With a centre punch mark now where we want it, pic 21 shows the housing being set up in the four jaw with an indicator and wiggler on the centre punch mark for drilling and boring - it does not go to mill afterward

Ed, it may be I'm not really clear on where you're at....I want to help but because there's a lot steps here, its hard to know what to say without knowing what throwing you off. If you go through the text and pics carefully and in detail describe where its not clear and i'll do my best to fill in

[gr8life]

Thanks for the reply. I have the piece in the 4 jaw & am going to post a pin in a few minutes.
thanks
ed

[gr8life]

[gr8life]

Where do I go from here? Bore thru?
lost
ed

[Bill Pace]

Yes, except go down to .312 for the rest of the hole...

[gr8life]

Thanks Bill. I have left the piece set in the 4 jaw but have removed the chuck, other work that needs to be done to pay for my toys. Ok go .312 thru the piece later this afternoon.
thanks
ed

[DeereGuy]

But --- wheres the fun in that!! This is the kind of thing that gives me my most enjoyment out in my shop - a challenging construction that will give me many hours of pleasure ... and end up with a neat tool!

I followed/built Mikes/Mcgyver article on his bench top metal brake from some months back and it was a real pleasure, well written and described, with a quite serviceable brake at completion.

Bill can you tell me what issue(s) the bender is in?