How do I polish a rough sizer-die

14 May 2002, 10:02

<Ola>

Bought a die-set in 9,3x64 from Lyman. It has a very rough finish inside of the sizer-die. What is the best way to polish it, without getting tolerances/dimensions to wide?

14 May 2002, 10:18

GeorgeS

I saw something on this on Varmint Al's website: Apply Flitz to a patch wrapped around a bore brush and use your drill or screw gun to polish the interior.

George

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Shoot straight, shoot often, but by all means, use enough gun!

14 May 2002, 11:35

<Kboom>

I've used a simular method, apply a light oil to the die, bend a piece of 1200 grit carberundium paper around a new bronze brush and rotate it in the die.

14 May 2002, 12:08

Walker

If its a new die send it back. We shouldn't have to accept substandard tools. Walker

14 May 2002, 20:39

460wby

Hi Ola.
This sounds familiar to me.
I think I know you??
Am I wrong??

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Shoot well, and hit hard.

Arild.
(And YES, I'm a NRA member!)

15 May 2002, 09:05

<magnarps>

Hi Ola.

I'll give you one advise; get rid of that damn Lyman die set.

I too have a Lyman die set in 9,3x64, and that is way too tight. I tried to polish it using water sand paper with very very fine sand. After I did that the die was as smooth as a childs ass, but still it didn't work.
It's so tight that when I resize my brass it get those bulges (bulkete).

It's a known fact that the metric dies from Lyman are tight.

Get in touch with a reseller of RCBS or Redding and get them to order one for you. It costs a bit more but it saves you the frustration.

Magnar

15 May 2002, 02:26

Dutch

I tend to polish with 0000 steel wool wrapped around an old brush. Followed by some Flitz on a rag. Seems to work fine. HTH, Dutch.

15 May 2002, 05:24

Robgunbuilder

Chuck the die in a lathe and use a dowell with some 400 grit wet/dry emery cloth.Run the Lathe at 300 RPM. Polish it lightly, then move to 600 grit. Finish with 800 grit. You will wind up with a very nice surface finish. You won't remove any appreciable amout of metal. This is how rifle chambers are polished!-Rob

16 May 2002, 02:49

1894

quote:
Originally posted by magnarps:
Hi Ola.
snip
It's a known fact that the metric dies from Lyman are tight.
Get in touch with a reseller of RCBS or Redding and get them to order one for you. It costs a bit more but it saves you the frustration.
Magnar

I have a sneaky little feeling that this may also be the case with Redding. My 9.3x62 either has a slack chamber or the Redding die is 'small base' style. I got Lee to make me up a set based on 2 fired cases and a bullet. This works well and doesn't work the brass near so much.

No way you can judge all metric dies on this but if you've got a bit of time the Lee custom route is cheap and good - a die custom made for your chamber.

16 May 2002, 03:40

<magnarps>

1894

Maybe I was a little anti Lyman at the time I wrote that, but this 9,3x64 project of mine has'nt been going after my plans recently.

Magnar

16 May 2002, 08:35

<Ola>

Thanks for all help!
The die is a litle narrow, but I think it is OK when I have get it polished. I think I will try the method given by robgunbuilider first.

460WBY:
I dont know you very good I can say, but do you come from one of the "North Eastern Walleys?"

Ola

19 May 2002, 04:51

<.>

When you purchase a machine tool, it should be ready to do the job. If it's not "finished' it needs to be sent back to the manufacture. It's not our job to finish machine tools.

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19 May 2002, 15:20

Martin@Hin

Same as Robgunbuilder but insted of the dowel use 1/4" brass rod cut a slot in it (lenghtwise 1/2" long) tear strips of emery 1/2" wide ,insert one end in the slot and roll up to the desired diameter chuck in to hand drill turn lathe one way drill other way.

Regards Martin