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And a very important feature of a good TIG machine for welding small parts is it's ability to go down to at least 5 amps, lower is better. Some inexpensive machines will not go low enough. Foot petals have been around since the '40s when TIG was developed, first registered as Heliarc by Airco...

Not true today with inverter technology. I have a Thermalarc 190 GTS, bought 12 years ago that delivers 95 amps on 110v, and 190 amps on 220v. Gunsmith welding rarely requires more than 50 welding amps if ever, easily provided by a std. 110 outlet. CAW

It isn't .210" down to the sear, it is .210 down to the thumb safety hole. Down to the sear pin hole is, .252" +.016", that makes the difference. So, .371" X .268" gives a hypotenuse of........... .457673", not .4344 CAW

Increased? The prints when read as they are, show it should be .458", or to take it to the fourth place, .4576, seems to be pretty much as it should be. CAW

Just detailed an SA TRP full rail Operator, and did an outside plus inside divide by two and got .4575. CAW

No, a common misunderstanding. The sear primary should always be cut as per the drawing, the primary face must be 90 degrees to a line from the sear pivot hole to the sear tip. What this means is the area where the hammer hook tips land is higher than the escape edge. This allows for a...

Whose say 89 degrees? The prints available say 86 degrees. What's important isn't really the floor to hook face angle, but the hook face relation to the pivot hole. The position desired by the original design puts the hook face if extended toward the pivot center above the hole perimeter by...

Faulty print reading. The nominal would be .458", .371"X .268", the .268 comes from the correct reading of the sear to hammer of .252"+.016"=.268". The .210 is the thumb safety hole. CAW

This is what it looks like in the middle of the action. By the time it's done the cartridge is in the chamber. CAW

The tension may be fine, but the extractor from what you have said, is losing control, and allowing the case to go too high for the ejector to contact, and eject. It may benefit from more tension. CAW

The breech block on the left, opposite the extractor, is the tension wall for the extractor to hold the case rim against. Have you also checked for correct tension? There should be enough tension to hold a loaded cartridge with it inserted in the slide only. Gentle shaking should not cause it to...

The extractor is probably clocking and the breech face may be machined too high. CAW

While OEM 8 round flush mags with the CMC follower work well they do not have the CMC spring which really makes a difference in the long run. CAW

Nominate for the worst reloading tip! CAW

This is the focus of CMC mags and their design. CAW

I find the Mec-Gar 8 rounders to work very smoothly, well made, and like them quite well. CAW

I have always carried a pocket or holstered lockback all my life, from age 9 or 10 on. Just to handy of a basic tool not too. Case Shark, Buck Squire, Buck Prince, Buck folding Alpha, Kershaw Leek assist, then on to Spyderco Police and Police 3, Spyderco Military. Took a while to be completely...

Yes the active coils are the only ones that can add resistance, but you must have a unit of measure to relate the spring rate, and that would be the length of the active coils, not the number of coils. The number of coils times the diameter of the wire will give you the compressed length. If you...

Another example of springs weight and rate come from the sometimes confusing alteration results of automotive springs. Take an off road truck with long, or tall coils springs, and it is found that the ride is like a roller coaster, up and down, a lot. So cut a few coils off. now it still goes up...

The example in the link clearly supports this as when L1-L2 varies so does the rate. What doesn't vary is the weight at full compression. Again a practical example, follow this. Two identical springs of equal weight when fully compressed. When placed end to end and again fully compressed will...