Alphabet punch set to mark SBR lower?

[LittleLebowski]

Would this work? I really don't give a shit if it doesn't look perfect.

https://www.amazon.com/alphabet-punc...abet+punch+set

[Grey]

Would this work? I really don't give a shit if it doesn't look perfect.

https://www.amazon.com/alphabet-punc...abet+punch+set

Doesn't the marking have to reach a certain depth? Will punches meet that depth requirement?

[TGS]

I don't have any particular knowledge in this, but I would think that hand-stamping an anodized aluminum lower would be a bad idea and turn out poorly, if not damage your receiver. Those lowers are usually roll-marked with hydraulic presses that isolate the piece from front and back, prior to anodizing while they're still raw.

[LittleLebowski]

Doesn't the marking have to reach a certain depth? Will punches meet that depth requirement?

Yes, I don’t know.

[EricP]

Those punches will easily reach the necessary engraving depth, which is > 0.003”.

Machinists have been stamping crooked part numbers on things since the beginning of time. It is not that easy to keep the spacing and depth consistent and the marking straight. If you do it, pack the cavity (magwell for instance) behind where you are stamping solid. Since you already have the costs of the lower and the stamp into this, the last thing I’d want to do is bend or crack the lower.

[Andy T]

I had my lower laser engraved - I suspect most people are going this route too. I also remember reading people using electric engraving pens?

[Grey]

For the cost of sending off a lower to get marked I don't see why you want to mess with punches... unless you have like 10 lowers you wanted to get marked.

[Duke]

Doesn't the marking have to reach a certain depth? Will punches meet that depth requirement?

Yes but they have no way of measuring said depth...
Ask me how I know.



Laser is my go to as I don’t like jacking with easily jacked up stuff

[Grey]

Yes but they have no way of measuring said depth...
Ask me how I know.



Laser is my go to as I don’t like jacking with easily jacked up stuff

How do you know?

Sent from my SM-G950U1 using Tapatalk

[OlongJohnson]

I picked up a set of quality, US-made old used letter stamps off fleabay for that purpose. Saw my buddies lower engraved by a local laser shop and changed my mind. Given the sunk costs in an engraved lower and the fact that it's basically a lifetime investment, it's worth the $60 to me to have it done perfectly.