[PROJECT] Clamp Knurling Tool

[EdK]

(01-01-2015, 12:05 PM)TomG Wrote: Does it make that pattern feeding in both directions? If so, it's possible that there isn't enough relief on the cutter and it's dragging behind the cutting edge. Also, what alloy is the steel? If it's 1018, that might be a pretty good finish.

Tom

Tom,

It makes a pattern when feeding in both directions but the pattern changes, as you would expect, when only the trailing end of the sweep is cutting. I ground the tool using the fly cutter grinding sheet from your web site. I'm sure the angles aren't dead on to what the sheet says but they should be pretty close. I'll double check them again though. It is 1018.

Thanks,
Ed

[rleete]

Having just come off of back surgery (S1 laminectomy in early November), I can say that your lifting device is just plain good sense. I wouldn't wish the pain I had on anyone.

You'll hear it time and again, but many younger men ignore the advice. Lift with your legs, and take care of your back. Better to suffer a little inconvenience than to be all but crippled later on in life.

[rleete]

http://start-model-engineering.co.uk/beg...y-cutting/ is an article written by "Bogstandard" (aka Blogwitch) which shows how to grind a flycutter tool. I've used his method, and get excellent results.

[EdK]

I've switched over to an end mill. I'll master the fly cutter some other time.

Ed

[DaveH]

(01-01-2015, 01:22 PM)EdK Wrote: I've switched over to an end mill. I'll master the fly cutter some other time.

Ed

Good idea, sometimes one can get bogged down and not see the wood for the trees.
For your first go I thought it was pretty good - one has to grind the tool bit, bother about spindle speed and then slow feed by hand. All in all Ed it came out quite good

DaveH

[EdK]

(01-01-2015, 01:28 PM)DaveH Wrote:

(01-01-2015, 01:22 PM)EdK Wrote: I've switched over to an end mill. I'll master the fly cutter some other time.

Ed

Good idea, sometimes one can get bogged down and not see the wood for the trees.
For your first go I thought it was pretty good - one has to grind the tool bit, bother about spindle speed and then slow feed by hand. All in all Ed it came out quite good

DaveH

Yup, I looked at it closer and it wasn't all the bad. Just not shiny metal camera good. I think it would have been better if I had power feed. Time to push that project higher up on the list. I also need to get a better grinder setup.

Ed

[TomG]

(01-01-2015, 12:10 PM)EdK Wrote:

(01-01-2015, 12:05 PM)TomG Wrote: Does it make that pattern feeding in both directions? If so, it's possible that there isn't enough relief on the cutter and it's dragging behind the cutting edge. Also, what alloy is the steel? If it's 1018, that might be a pretty good finish.

Tom

Tom,

 It is 1018.

Thanks,
Ed

Yup, that's as good as you are going to get. Sometimes if you move the flycutter off center, the finish will improve some, but not by much.

Tom

[Mayhem]

This is why I bought a surface grinder

[EdK]

(01-01-2015, 07:47 PM)Mayhem Wrote: This is why I bought a surface grinder

This is why I'm keeping my eye open for a surface grinder, although a knee mill has priority.

Ed

[Mayhem]

What became of your inquiries with that company in China?