Who said anything about titanium? Use perforated 304 stainless. It will be half the weight of solid sheet and vastly cheaper than titanium - a .048 thick sheet of SS with .125 holes, 4'x4' is $570 from McMaster and has a 40% open area.
machining question / BIT
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Re: machining question / BIT
HTRN, I would tell you that you are an evil fucker, but you probably get that a lot ~ Netpackrat
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Re: machining question / BIT
very nice on topic video
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Re: machining question / BIT
will look into that, thanks
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Re: machining question / BIT
https://www.tigertitanium.com/storek/Plate/6Al-4V
4 plates of 12x48" is $155 each so $620 total. It isn't vastly cheaper, but it is when you consider the time element of making the holes.
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Re: machining question / BIT
The other thing,
The stainless for a 12x12 section at .036" thickness is 1.47# without holes. Is .882# with the 40% hole option. The TI without any holes is .845#
This means there is zero weight advantage to using the perforated stainless.
I may buy some of the perf non-stainless to do testing with and compare to the same steel that is not perforated then I can extrapolate what should happen with the TI. So thanks for making that suggestion.
If I did the 40% holes in the titanium, it would be .507#, which is a significant reduction
The stainless for a 12x12 section at .036" thickness is 1.47# without holes. Is .882# with the 40% hole option. The TI without any holes is .845#
This means there is zero weight advantage to using the perforated stainless.
I may buy some of the perf non-stainless to do testing with and compare to the same steel that is not perforated then I can extrapolate what should happen with the TI. So thanks for making that suggestion.
If I did the 40% holes in the titanium, it would be .507#, which is a significant reduction
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- Combat Controller
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Re: machining question / BIT
What tooling do you have? Would you be able to add Scandium Alloy or Aluminum?
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Re: machining question / BIT
7071 aluminum is about the same strength (my very amateur research) as grade 2 TI, but it galls much easier and thus would wear out faster. Don't know anything about scandium alloys other than some smith revolvers used them.Combat Controller wrote: ↑Fri Jun 23, 2023 1:11 pm What tooling do you have? Would you be able to add Scandium Alloy or Aluminum?
As a reference grade 5 TI is +150% stronger than Grade 2 in all fronts and about 60-80% stronger than grade 4 TI. Which is why I am using 0.8mm Grade 5 where others use 1.0mm grade 4. 20% lighter and damn near the same protection. Provides less fatigue and less heat build up so you fight better, stronger and faster.
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Re: machining question / BIT
Hmmm
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