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See Ed, told you. That is a free ad.

Exactly. That is a free advertisement!

Exactly. Would Dave fill the gun with oxygen claiming than only air was used? If so then would he send the air tube for analysis? I know, Dave was probably paid by Lukaz as well as Marko. Ed, please stop joking.

It's russian standard as Ed indicated. I believe it is selfexplanatory. As of the numerical simulation - garbage in, garbage out. If the boundary conditions are incorrect then the whole simulation is useless. I do not favor Marko's simulation over Ed's one as I am not competent enough in the...

Ed, thank you for your position on that matter. It seems Lukaz is someone close to your heart if you remember his name clearly and you mention it all the time. Maybe Marko is Lukaz in fact? Ed, you mentioned nothing about the geometry differences of the reservoir bottom between the batches and...

As I mentioned, Ed stands behind his products. There was a warranty action in the past:

Very true.

Guys, let's calm down. It could be an isolated case. Airplanes crash and we all fly. Anyway, we should make all we can to minimize the risk and help to improve the design. Honestly, Ed stands behind his products.

Do you use a handpump? Ed does not recommend them.

I would verify how much meat left here:

Yes, sold as safety tuning parts. Take a look again:

Do you plan to sell them as tuning parts? Marko, true - just imagine what if Sasha after a difficult % Sunday manufactured a bottom like that? It is not easy to detect such a mistake and if we go to the extreme there may be very little alu left. If you have threading then it is obvious.

Another thing which comes to my mind - what if some tubes are manufactured like that: Flat bottom. A little deeper.

Well, does it really matter if the manufacturing culture and QA are established and monitored? Ah, you mean the bottom may depend on the place where it was manufactured.

According to the simulations done by Marko it seems that conical bottom with smooth transition is good enough assuming the right alu was used. But we don't know which air tube is which without disassembling. What we know from your post is that the EDgun machinists do not pay much attention to...

Sashaaa? Did you use a flat drill instead of a 118* one?

Exactly.

If so then this is insane how a small change in the geometry can lead to disastrous consequences. It could be committed by an unaware worker. But anyway, it should've been detected during QA.

Wow, it seems the maximum stress is reduced by close to 50% if the drill with a classical angle is used. Have we just found a potential root cause of the explosion?

Anyway, what concerns me the most is the slow degradation of quality when it comes to EDgun. Just take a look at these two plugs. The first one comes from Matador R3M and the second one from Matador R5M. In the first picture you can see a nice round corner. In the second picture you can see a...