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Springfield and LRB both offer lugged receivers. You can see them on their websites. I will gladly post photos of a welded receiver, if you want to see it.Lugging was started in the mid? eighties to

Me too. I have a couple destined for conversion into BM-59s. That will involve milling on the receiver. I also have a couple of receiver forgings that might at some point ask to be

Derrick You have me curious. I have been shooting M1's for many years and never heard of this procedure. What is the reasoning behind it? Could you post a picture of what you are doing to the

I think the water quench is problematic, you don't want to create stress. Usually when you do a preheat to weld, you also do a post heat to slow down the cool down. It's probably to prevent heat

Derrick if ya have not already asked over here on the Practical Machinist gunsmith portion of the forum Your question should garner some good info . Free to join & there's? at least a couple?

Thank you for the response.I am mildly familiar with what you discussed on how steels are hardened and the perils of Hydrogen contamination , thru other projects and advisors.Here is my dilemma, if

I've noted that there is a deafening silence from qualified metallurgists, so as a chartered mechanical engineer, I'll advise what little I know on this subject. ?NO specialist is going to proffer

I am working on a project and need some advice on welding heat treated materials. Ask_derrick@...

Somebody on this list added a rocketronix leadscrew and loved it. I don't remember who, and I am not 100% sure of the spelling, but at 1 am I am not googling anything Get Outlook for

I have considered adding an electric motor with a variable speed, but anything more is beyond my abilities. I have a lot of skills, but electronics is not one of them. Neil

I have a 4ft 9a with qcgb and it has power cross feed, like all 9a lathes. I think I Paid $1,100. A qcgb on ebay is $350. You can sell your lathe and buy a replacement and out of pocket you might be

Mine has power crossfeed. I have significant space constraints, so even at 4' this lathe's size is perfect. I do still keep an eye on the local market, and there have been some good ones, but they've

Thanks for the details. Interesting info.

Castings of all materials contain residual stresses. ?Welded fabrications contain residual stresses, to the extent that when conducting stress calculations, you assume that the welds are already at

As I understand it, cold formed steels (cold-rolled) have inherent stresses, as do extruded aluminum/brass/etc... and as such, they will warp due to material removal alone. Hot rolled do not, or at

I have not gotten around to machining them yet, but I would expect some warping after hardening. Being that it is an insert holder, any warping should not matter as the QCTP holder can be adjusted

Mike, did they warp at all during annealing or subsequent machining? I am also curious whether they will warp when you harden them back. If they do, you will have to grind them back to

They stayed in the oven at 1550 about an hour. I shut the oven off and left them in overnight to cool slowly. I did clean the scale off before testing hardness, but I am still skeptical of it being

I did not have any problems machining my insert holders, I did nothing to them and used a carbide cutter. Gary

Good deal . How long did ya cook them ? thanks animal