What are you machining?

[Hood]

A pedal for the DCT foot shifter.

Will have to anodise the lever to match the pedal and also the guard I anodised the last day.

Originally it looked like this.

A few days ago I anodised the guard and today I made a pedal and anodised it.

The pedal.

And fitted.

 

[Erie Fred]

Nice Knurls sir !
Is it the camera, or is the outermost ring of knurling look not as deep ?

 

[Hood]

Nice Knurls sir !
Is it the camera, or is the outermost ring of knurling look not as deep ?

It is not as deep but the camera accentuates it, originally I wasn't going to knurl but just groove so didn't leave enough material to grip securely enough in the chuck to put the pressure on as I had to move it out in the chuck to get the knurler in to the end..

 

[Erie Fred]

It is not as deep but the camera accentuates it, originally I wasn't going to knurl but just groove so didn't leave enough material to grip securely enough in the chuck to put the pressure on as I had to move it out in the chuck to get the knurler in to the end..

I use a balanced knurling tool.
No forces other than torque.
On brass, I flush with diesel/kero, flood it on there so the chips don't get re-rolled.

 

[Kram]

Nice but you need more practise on the knurler

 

[Hood]

I use a balanced knurling tool.
No forces other than torque.
On brass, I flush with diesel/kero, flood it on there so the chips don't get re-rolled.

Balanced as in scissor type?
Not a fan of them, I could get them to work fine in brass but not so good in alu and hardly at all in stainless. It was a second hand cheap set I had so maybe that was the issue.

 

[Erie Fred]

Balanced as in scissor type?
Not a fan of them, I could get them to work fine in brass but not so good in alu and hardly at all in stainless. It was a second hand cheap set I had so maybe that was the issue.

Well, mine is a Brown & Sharp made for turret & automatic lathes.
"C" frame shaped, with the knurl angle changeable, so I turned them 90 degrees.
Set them in the turret, come in from the end.

I could see how the scissor type would give problems, the ones I have are massive
in construction (sadly no pix as of yet).

EDIT:
Stainless will work harden in a flash.

I've always been told "Get on it hard, and get off it quick"

Aluminum (more so than brass) is soft to where the torque requirements
of hard knurling might twist the part.

In that case, slow in feed, plenty of coolant, and give it time to do the work,
no fears of work hardening.

In your case of very limited qty production, you could even (with the scissor type)
adjust it for shallow, roll it onto the part, then while rolling, crank up the pressure
while on the part.

 

[Hopefuldave]

I have a Marlco scissor knurler, pretty hefty and hasn't had a problem with anything I've assaulted with it - and produces proper sharp knurls you can really get a grip on (or lose skin on...)

 

[Pete.]

I used a scissors one to make this the other day. It didn't work at all well with the straight knurl but managed this coarse hatch one OK.

 

[Erie Fred]

I used a scissors one to make this the other day. It didn't work at all well with the straight knurl but managed this coarse hatch one OK.

View attachment 414245

Looks like some chips are getting under the rollers.
that and one roller isn't as good as the opposite one.
Look at the partial at the exteme left, see the peaks are well defined.
Now look at the main one in the middle of the pix, see how the diamonds aren't
as sharp ?

 

[Pete.]

Meh, it's knurled.

 

[Erie Fred]

Meh, it's knurled.

So you don't ever want to learn something new ?
How to improve your workmanship ?

OkeeDokee.....

 

[Hood]

So you don't ever want to learn something new ?
How to improve your workmanship ?

OkeeDokee.....

I have seen a lot of @Pete. workmanship and it is top notch, don't recall seeing any of yours but I am sure it is likewise.

 

[Pete.]

So you don't ever want to learn something new ?
How to improve your workmanship ?

OkeeDokee.....

I'm very much a function over form person. If I wasn't satisfied with it I'd re-make it or buy (or make) a better knurler. At the end of the day though all I needed was a gripping surface.

 

[tigdlo]

So you don't ever want to learn something new ?
How to improve your workmanship ?

OkeeDokee.....

Life is finite, no point trying to master every skill and waste time making everything perfect, took me way too long to learn when good enough is good enough.

 

[Erie Fred]

Life is finite, no point trying to master every skill and waste time making everything perfect, took me way too long to learn when good enough is good enough.

Mediocraty.....It's the what the UK has become....?

 

[RichardM]

It is not as deep but the camera accentuates it, originally I wasn't going to knurl but just groove so didn't leave enough material to grip securely enough in the chuck to put the pressure on as I had to move it out in the chuck to get the knurler in to the end..

I'd still go for grooves just for the wear on boots.

 

[Hood]

I'd still go for grooves just for the wear on boots.

I am not even sure how much I will use it yet. Once the novelty wears off I will likely be back in S2 mode and only use it to downshift occasionally but... well time will tell.

 

[Pete.]

Mediocraty.....It's the what the UK has become....?

We're not all mediocre. Some of us aspire to it.....

 

[dobbslc]

Some of Pete's mediocre work...