Stainless Steel Bushing

[Wongster]

I'll work on the next piece. The ones I have (the multi-fluted ones) are from Dormer. Cost me quite a bit. The single flute (or given as zero flute on some website) was from Axminster. They're rather inexpensive, as compared to Dormer.

Regards,
Wong

[EdK]

The single flute and zero flute are quite different countersinks.

Ed

[Wongster]

They looked the same on some website photos... I'll take a closer look. May have missed out the difference.

Thanks for pointing that out Ed.

Regards,
Wong

[EdK]

Wong,

Here's a single flute countersink:

http://www.use-enco.com/CGI/INSRIT?PARTP...PN317-0004

And here's a zero flute countersink.

http://www.use-enco.com/CGI/INSRIT?PARTP...A=319-2577

Ed

[Wongster]

Ed,

So the set of 3 from Axminster is a set of zero flute countersink.

Thanks for clearing that up.

I've received the collet chuck from CTC Tools today. More action soon!

Regards,
Wong

[dallen]

(07-23-2012, 05:56 PM)Wongster Wrote: Ed,

I've the one shown on Enco site but for 82 and 90 degree. Just when I need the 60 degree, I don't have it... sigh... Anyway, good excuse to go visit the shop.

I didn't have good experience using this type. Lots of chatter when using them. Maybe I used them wrongly.

Regards,
Wong

very slow speed should help with the chatter

[nel2lar]

Ed
I just noticed the thread and well, my two cents. Are you doing the work on a milling machine or a lathe? If I was it would be the lathe for the simple reason you would not need special tooling. That is the only down side to a milling machine. Let me know and if I can help I'm a email away.
Nelson Collar



May the Lord Direct Your Steps
"When injustice becomes law - resistance becomes duty."

[EdK]

(07-26-2012, 02:23 PM)nel2lar Wrote: Ed
I just noticed the thread and well, my two cents. Are you doing the work on a milling machine or a lathe? If I was it would be the lathe for the simple reason you would not need special tooling. That is the only down side to a milling machine. Let me know and if I can help I'm a email away.
Nelson Collar



May the Lord Direct Your Steps
"When injustice becomes law - resistance becomes duty."

Huh? I think you meant to address this to Wong. It's his thread.

Ed

[Wongster]

Hi Nelson,

I am doing the pieces on the lathe. Its a simple job which involved only turning to a shoulder, drilling, and countersink. After the first few pieces, I just use a file to put the chamfer on the edges. Save time.

Regards,
Wong

[Wongster]

Managed to make 5 pieces altogether. Progress is slow as I still go back to office despite being on medical leave.

For the last 2 pieces, I had difficult parting off. Hacksaw was used to cut off the job from the stock. This didn't happen for the first 3 pieces. Parting started ok till I'm 2/3 way through. It stopped cutting after that. Is this work hardening that was spoken about? I went at 330 rpm and feed rather aggressively. Lots of cutting fluid was used.

This is the Glanze parting tool I'm using, bought from Chronos. Brand new when I made the first piece of the bushing. Total 5 small cut old in age...



Anyone can shed some light?

Regards,
Wong