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Old February 10, 2018, 14:03   #1
Snugglebutt
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Sanitization, Rhodie Style

I'm in the process of building a loose clone of a sanitized Rhodie G1 in the style of the rifle featured in the recent Larry Vickers/Forgotten Weapons video. I have a 2012 DSA type 1 upper, a Belgian made RA marked type 1 lower, SA made NBC handguard, grenade gas plug, a chopped carry handle stub, and R marked selector with baby poop and beak ground off. The rest of the parts are a mix of Imbel and US copies of Imbel parts (922r). The only part that I'm knowingly leaving 'less-than-legit' is the stock, simply because I find the long stocks uncomfortable.

I'd like to find out if anyone has reproduced the sanitization marks, especially the large hole cut in the mag well to remove the SA crest. I've seen the hole listed as 1-1.2", and I'll probably have to eyeball the location based off the pics/video. The problem is - I've never drilled hole that large in hard metal before.

Any advice on drilling that hole or my build in general would be appreciated.

Last edited by Snugglebutt; February 11, 2018 at 14:36.
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Old February 11, 2018, 14:11   #2
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Apparently 1in carbide bits aren't super common. Maybe I should let go of this particular hole.

edit: Found hole saws that are supposed to work on stainless steel. Any opinions?

https://www.aliexpress.com/item/5Pcs...753440461.html

Last edited by Snugglebutt; February 11, 2018 at 14:18.
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Old February 11, 2018, 14:21   #3
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I would think about using a diamond hole saw
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Old February 11, 2018, 14:22   #4
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Saw your post yesterday and basically thought hole saw. Do you have a drill press?
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Old February 11, 2018, 14:32   #5
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Quote:
Originally Posted by meltblown View Post
Saw your post yesterday and basically thought hole saw. Do you have a drill press?
I have a 10" drill press from Northern Tool that's not great but not terrible. I've been considering upgrading.
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Old February 11, 2018, 14:34   #6
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I would think about using a diamond hole saw
The diamond hole saws say they're for stone, etc. Can you explain why you'd choose that over cobalt?
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Old February 11, 2018, 15:13   #7
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A carbide tooth hole saw would work for you with your drill press, I think. Dremel also makes a hole cutting attachment that's like $10 that you may want to look into. A machine shop would make short work of this for you. The problem would be finding one that would do it. Oh, if you decide to try it yourself practice on a piece of steel before you go after your receiver. :-)
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Old February 11, 2018, 15:26   #8
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Carbide would work well for you too, my thought of diamond would be a pretty clean hole but that would be slow going.
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Old February 11, 2018, 16:05   #9
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I would use an annular cutter.
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Old February 11, 2018, 16:26   #10
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I would use an annular cutter.
Do they make annular cutters that he can chuck up in a drill press?
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Old February 11, 2018, 20:27   #11
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Originally Posted by OLDMANPBK View Post
A carbide tooth hole saw would work for you with your drill press, I think. Dremel also makes a hole cutting attachment that's like $10 that you may want to look into. A machine shop would make short work of this for you. The problem would be finding one that would do it. Oh, if you decide to try it yourself practice on a piece of steel before you go after your receiver. :-)
Definitely. I have some scrap steel laying around, but I'm sure it's not as hard as the receiver, although it's at least twice as thick.

I'm also planning on cutting a piece of it to clamp to the inside of the magwell as a backing. I've read that this will leave a cleaner hole.

Still need to figure out the exact size I want to go with and what I'm going to do about the bare metal exposed. Also wondering if they chamfered the hole at all...
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Old February 12, 2018, 20:02   #12
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I've used these to drill mild steel & Mack truck frame up to 3/8 thick. They work really nice & leave a clean hole. Center punching must be accurate and deep though.

This is a basic set to 3/4", the larger set is a bit more.
https://www.tooltopia.com/blair-11090n.aspx
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Old February 12, 2018, 22:35   #13
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Quote:
Originally Posted by OLDMANPBK View Post
Do they make annular cutters that he can chuck up in a drill press?
Last time I used them was on a mag drill with a standard chuck, so yes. Plinker's link is basically an annular cutter kit.
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Old February 13, 2018, 06:55   #14
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I'd be really surprised if a good quality BI-metal holesaw wouldn't drill a receiver. Run it slow, keep it wet with oil, support on the back side, and make sure everything is clamped so it can't move.
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Old February 13, 2018, 09:29   #15
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Hole saws make a shit-looking hole. Go the annular cutter route if you don’t want hole edges to look like they were cut by Century Arms.
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Old February 13, 2018, 11:04   #16
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If he's in the building I believe any machine shop could do it.

If you really want pretty and perfect though wire EDM is your friend. Then again we're talking about the Rhodies. Didn't they care about pretty about as much as they cared about their serializing and paint jobs?

Shelby Cobra. Possibly the greatest car of all time. If you find one with perfect sheetmetal it is imperfect. The fenders and other panels were hand hammered over dies. When the hammering makes are removed it actually detracts from the original state of the Cobra sheetmetal. In other words, imperfect IS perfect.

While I'm not versed in the Rhodie sterilizations, I can't see them putting the artisanal craftsmen taken from Holland and Holland in the dead of the night to ensure the perfection of the hole.
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Old February 14, 2018, 04:58   #17
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Goodorbit did one. If you can find his thread. I'll see if I can find out the details
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Old February 14, 2018, 05:01   #18
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http://www.falfiles.com/forums/showt...postid=3247454

Sadly the pictures are gone...
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