Optic Milling Question

[lagg300]

Lagg300,  who did the Milling on your slide so we all know know where not to go?
To have a gap that big that you're optic is moving around,  that's just wrong.
Please tell us who it is.

It was done by NCengravers.

[StuckonGlocks21]

Lagg300,  who did the Milling on your slide so we all know know where not to go?
To have a gap that big that you're optic is moving around,  that's just wrong.
Please tell us who it is.

It was done by NCengravers.

Any way you could post a picture of their milling work with the optic?

[DOC 1500]

http://ncengravers.com/
 looks to me like they do some pretty fancy work.
If your optic is sliding around oh, I would contact them and let them know find out what's going on.
Unless you only paid for a generic cut.
Did you send them your optic along with your slide when they did the Milling?

[Yankchef]

Mark doesn't require you send the optic with the slide. If he's the one who did the work I would call him. I literally have a 50 thread long email communicating with him about slide work so the man will message you back especially if he thinks there was an issue with his work. I would call him and have him troubleshoot it with you over the phone.

I don't have any affiliations with Mark just had work done by him that I was happy with, although I don't believe he milled in optic mounting lugs but my optic hasn't come loose.



[Mods resized photo]

[DOC 1500]

Lagg300,  who did the Milling on your slide so we all know know where not to go?
To have a gap that big that you're optic is moving around,  that's just wrong.
Please tell us who it is.

It was done by NCengravers.

Now this is the strangest thing ever.
I was just over on the S&W forum, asking about having my S&W 4006 TSW milled for an optic, the same people were suggested to me.
Coincidence???

[lagg300]

I'll have the actual pictures of the milling uploaded later. This is the video I took of the optic being loose while in the milled pocket. I can move it back and forth rear and forward pretty easily.


https://www.youtube.com/watch?v=K5V37TXg_Pg&feature=youtu.be

[Yankchef]

Have you tried both lengths of screws that came with the optic? I installed my 407c in a riser mount and when I switched it over to my glock mos with the same screws there was a lot of wobble. I used the other shorter screws that were included in the box and it hasn't moved or lost zero or anything since

Sent from my H8266 using Tapatalk

[Practical Shooter]

Lagg300,  who did the Milling on your slide so we all know know where not to go?
To have a gap that big that you're optic is moving around,  that's just wrong.
Please tell us who it is.

I am curious too as I am starting to think the same.

[DOC 1500]

 he named The Machine Shop a couple of posts up ^^^^^^ and a video that was very revealing of their work.
I also emailed that particular machine shop and told them I was thinking of having my po7 milled for an optic, I asked them if they needed me to ship the optic to them and the man said no because they have just about all of the Optics on the market there to measure.
If that's the case then I definitely don't want them to do work for me. Especially when they're leaving that much of a gap for the optic to slide around

[StuckonGlocks21]

I also emailed that particular machine shop and told them I was thinking of having my po7 milled for an optic, I asked them if they needed me to ship the optic to them and the man said no because they have just about all of the Optics on the market there to measure.

A knowledgeable shop doesn?t have to measure an optic. Some optic manufacturers publish the footprint dimensions on their website, others will email the print when requested. It?s easy to make a program with a print. Then the machinist can just try the optic in the cut and adjust as needed.

[DOC 1500]

 in my eyes you either do Precision work as a machinist or you don't.
 If it were my machine shop, Work better be done perfectly . If not then it doesn't get my name on it and doesn't go out the door. and somebody's a** is getting chewed.

[Wobbly]

A knowledgeable shop doesn?t have to measure an optic. Some optic manufacturers publish the footprint dimensions on their website, others will email the print when requested. It?s easy to make a program with a print. Then the machinist can just try the optic in the cut and adjust as needed.

I disagree.

Think about what you are saying. Are you paying to have your slide milled, or for the machinist to do research and wait for drawings to arrive ? What you're suggesting is a great way to have your slide languish in some shop for 3 months.

As a machinist, I want to work from and make my own measurements of THE ACTUAL PART. Not some drawing of the part, where I have to worry about...
1) Are there multiple drawing revisions out there ?
2) Have I got the correct drawing revision for the part I'm supposed to be fitting ?
3) Are there dimensions missing from the supplied drawing which I need to do my work ?
4) Is the drawing depicting the optic, in which case I need to mirror image the fastener positions, or is it a drawing of the actual cut to be made ?

Machinist already have plenty to worry about: machine time, machine availability, having the correct cutters and taps on hand, correct feeds and speeds for the material being cut, and a dozen other problems simply to handle your job once it enters their shop. They haven't got time to go get on the computer and make phone calls !

Not unless you want to pay machinist wages for that research time. 

[DOC 1500]

A knowledgeable shop doesn?t have to measure an optic. Some optic manufacturers publish the footprint dimensions on their website, others will email the print when requested. It?s easy to make a program with a print. Then the machinist can just try the optic in the cut and adjust as needed.

I disagree.

Think about what you are saying. Are you paying to have your slide milled, or for the machinist to do research and wait for drawings to arrive ? What you're suggesting is a great way to have your slide languish in some shop for 3 months.

As a machinist, I want to work from and make my own measurements of THE ACTUAL PART. Not some drawing of the part, where I have to worry about...
1) Are there multiple drawing revisions out there ?
2) Have I got the correct drawing revision for the part I'm supposed to be fitting ?
3) Are there dimensions missing from the supplied drawing which I need to do my work ?
4) Is the drawing depicting the optic, in which case I need to mirror image the fastener positions, or is it a drawing of the actual cut to be made ?

Machinist already have plenty to worry about: machine time, machine availability, having the correct cutters and taps on hand, correct feeds and speeds for the material being cut, and a dozen other problems simply to handle your job once it enters their shop. They haven't got time to go get on the computer and make phone calls !

Not unless you want to pay machinist wages for that research time. 

👍👍👍👍👍👍
I totally agree with this!!!!
Measure the item in your hand, then measure it again and then make the cut.
And then measure and re-measure.
When I slide was milled oh, you can't fit a hair between the milling and the optic.

[earlan357]

The RMR was not originally designed for pistol slides, it was to be mounted on rifles to supplement magnified optics like the ACOG.  Those two little nubs aren't ideal for absorbing the recoil forces of a reciprocating slide, compared to the front and rear of the optic body.  It's why I don't like adapter plates on handgun slides, since most rely on just the nubs and screws to secure the optic.  And on many slides, the nubs aren't even full circles due to the way slides narrow or curve at the top.

This is the drawing I used when I milled my SP-01 slide for an RMR and optic plate.  For reference, Cerakote is .001" thick, and the tolerance for the length of the RMR is +-.005" and the 3" radius tolerance is .010".  Add in tooling wear and machine tolerance, it's possible to have a sloppy fit.  I measured my plate and milled it to match the optic, then cut the slide pocket 0.001 oversized.  After Cerakote, the fit was tight enough that I needed to lightly tap the plate and optic in.  I don't know what Holosun's tolerances are, so just because it fits an RMR footprint, doesn't mean the pockets will be identical.



While I prefer sending the optic with the slide, a "universal" cut can be tight depending on how the machinist accounts for tolerances.  Here's my "universal" cut done on a P10c by JagerWerks.  I measured my RMR's length (1.7805") and added it to the comments when I ordered.  I don't know if he did anything different, but here's what I got back.
https://www.instagram.com/p/BZKtVaOl8yl/?utm_source=ig_web_button_share_sheet

[StuckonGlocks21]

Do as you please.

The manufacturer PDF print is downloaded instantly. If an email request is needed, it?s answered within a day. If you have a CMM, it still takes time. I?ll work from the optic manufacturer print EVERY TIME as opposed to hand measuring. Risking tolerance stack, measuring errors, etc. CAM software can flip, mirror or anything else you can imagine.
Again. Do as you please. I?ll work from a manufacturer print first. Plan ahead. Download them ahead of time. Not that many.