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I have been teaching myself to flute using my new dividing head

This is an old scrap barrel and I decided to be adventurous and attempt to copy the AMU's SDM style of 12 flutes.
These are 3/16" wide and .090" deep
8BFE9052-83FE-4463-9E0B-F2AD4A7EBC34_zps
5422707C-67A8-44E1-A37A-1005CE07AE55_zps
8FC3930F-4125-4F0F-86D6-54A5003E13DB_zps
In the last pic there are only 4 flutes as I didn't judge the position of the chuck, but now I know, and today was about learning.
For comparison, before fluting this 20" Hbar barrel was 1542 gms, and now weighs 1352.
I would predict another few gms off to be around 200gms total weight saving as is
My std 18" mid weight SPR profile barrel weighs 1156gms
Fluting on the front is .060" deep, I wouldn't go this deep again here
Is it worth the 3-4 hrs it takes to do??
Who knows, but it does look bloody awesome
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I have been teaching myself to flute using my new dividing head

This is an old scrap barrel and I decided to be adventurous and attempt to copy the AMU's SDM style of 12 flutes.
These are 3/16" wide and .090" deep
8BFE9052-83FE-4463-9E0B-F2AD4A7EBC34_zps
5422707C-67A8-44E1-A37A-1005CE07AE55_zps
8FC3930F-4125-4F0F-86D6-54A5003E13DB_zps
In the last pic there are only 4 flutes as I didn't judge the position of the chuck, but now I know, and today was about learning.
For comparison, before fluting this 20" Hbar barrel was 1542 gms, and now weighs 1352.
I would predict another few gms off to be around 200gms total weight saving as is
My std 18" mid weight SPR profile barrel weighs 1156gms
Fluting on the front is .060" deep, I wouldn't go this deep again here
Is it worth the 3-4 hrs it takes to do??
Who knows, but it does look bloody awesome

 

Looks Good Mark

 

Takes 2-3 hours on a CNC to do that much fluting,

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Cheers Mik,

I believe you.

As for me, incredibly labour intensive.

 

I intend to make a new barrel for myself over the weekend, so thought I'd try this and see how it performs

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Looks good

 

 

question - always thought there needed to be a "rolling pressure pad" or similar on the opposite side of the work piece (180 degrees to the cutter - to stop or prevent vibration / chatter - how do you overcome this, or has it not manifested ?

 

 

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I had it backed with an angle plate and clamped down solid on 2 axis.

Today I did a new barrel for real and here's some pics of the finished article after painting.

I ran out of light so will take pics of the rifle tomorrow

 

A1365CC4-8B4C-48CC-AB85-510A2ED3B5EE_zps

eab6d700-5a08-4c3c-aae8-eba24ef7505c_zps

3414E3DF-A360-45E8-B8FE-4F1058226675_zps

DFC075C4-8E68-42C7-AACF-E2FBBD47E996_zps

 

All I can say is try it, but set plenty of time aside, I did :)

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