MetalworkingFun Forum

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

The single flute and zero flute are quite different countersinks.

Ed

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

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

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

(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

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."

(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

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

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