That is a lot of effort! I hope that many people want one with your modifications. At least I like my (stock, with swapped led) RRT-01 very much 
With reflector or TIR?
That's no simple mod you're doing. Impressive.
As for my RRT-01, I just plan to LED swap it. I like the rest of it well enough stock. I was sorely tempted by another thread's listing of 18650 tubes that LEGO with it, but I think the head is large enough that I wouldn't want to carry it at with the added length.
Nice. My rrt is waiting.
As usual, I love TIR optics and already prepared several choices. I don’t want to use stock pill, it’s a failed recycled design. Note those multiple holes made for several Jetbeam models. The driver also another recycled component from Niteye TCR1, with higher output.
EDIT: the funniest failure was how Jetbeam made thread offset from the original holes. And unused big hole in the center completely covered by the MCPCB. The latter is actually a good thing if there’s a triple 13mm MCPCB available
I’m very disappointed to see how the stock rotary dial is not even dustproof. It has one O-ring on top but nothing at the bottom. With the thick sticky grease behind it and excessively large clearance, a dunk on a sandy beach will ruin it. I prefer lower sensible output like the older design.
[Clemence]
Will moded rrts be available to order? 
This is why I couldn’t resist to make a new pill
Yes, but very very later I guess
[Clemence]
Looking forward to seeing your mod!
This would be a nice upgrade for my RRT-01s. I would love a few if they become available in copper
Nice 
I am so excited to see this! Clemence work is always top quality! Hope they will be in copper instead of brass…
Nice work Clemence .
I’ll take a copper pill with no wire holes drilled if you ever wanna sell one.
That’s a lot of work replicating those pills. Nice job
Excellent work, Clemence! Great to see all this, keeping the RRT-01 as relevant as can be.
Thanks for all those supportive comments above
In my opinion, pure copper (I used 99,95% copper) is not the best material for RRT01 for below reasons:
- too soft, dent easily
- copper thread tend to be weaker than 2024 aluminum or any brass thread.
- hard to machine
- expensive
- too heavy for EDC. Stock brass pill weights 17,08gr, modified brass (high copper) 23,26gr, copper (99,95%) 23,92gr
- also, aesthetically non visible
For RRT01, modified pill made from 2024 aluminum weights approximately only 7,42gr. More than half stock pill with thicker LED base and more material overall. Although copper has roughly triple the thermal conductivity of stock brass pill, with aluminum its already doubled. What do you guys think?
[Clemence]
I say go for alu. Maybe this light will be ok for edcing afterall with the weight reduction.
I had already been thinking why Jetbeam chose brass for the pill. One reason could be that the pill is the guidance for the ball bearing, the metals on both sides of the ball, SS (the ring) and brass (the pill) are slippery and wear resistant, while aluminium (and copper) is non-slipping and wears easy.
The question is if this is relevant for a simple low-tolerance magnetic ring construction or would greased aluminium work just as well, even over time ?
For all other reasons, I fully vote for aluminium, the best flashlight material in the world.
Personally, I don’t mind the weight because the light is so small anyways. I vote copper.
You have a point with the wear Djozz, but soft copper is certainly not a good option than.
Maybe an alu pill and a brass ring for the ball slot.
Or maybe a more wear proof alu like 6082 or something.
Although I think it would take quite some time to wear out soft alu.
Brass = the golden standard for metal machining. Any hard/easy to machine standards always compared to brass.
Brass has the best dry lubricity for metal to metal contact, superior galling resistant. Even against it own
Aluminum can be anodized or greased for better wear resistance. But seriously, a true 20xx aluminum is very strong. I don’t think all those manufacturers with “aerospace aluminum material” really use 20xx or 70xx aluminum. These aero grade aluminum can also heat treated for even better strength. I will check local supply for used 7068 scraps. IMO, 7068 Al is the ultimate flashlight material.
[Clemence]