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  1. scianiac

    How about a 3D printer section?

    I have been doing some testing with ways to DIY one of these, since the commercial options are absurd money and I haven't seen other DIY options. My goal is to do it in a such a way to just make large compromises in certain areas to reduce complexity. So you have a silicone sock? These can...
  2. scianiac

    Convert from DISC brake to RIM brake

    What about alternate tire solutions to avoid getting flats? Tubeless + Sealant (lots of hardcore sealant since weight isn't your concern here), Foam inserts that go outside the tube (to stop what I assume are sharp objects getting deep enough to get to the tube), sealant inside the tube...
  3. scianiac

    How about a 3D printer section?

    Depends on how the part will be loaded, you're often better off increasing the perimeters before you start increasing infill, sometimes going all perimeters right to the core is stronger than infill. For instance if you have a flat part with two holes, all perimeters will be immensely strong in...
  4. scianiac

    Building a motor

    Have you had any luck in talking to these motor mfgs finding any motor variables that would help calculate iron losses? They would be very useful in determining the ideal RPM ranges we should be gearing for as it seems places like Ant sell Kvs to run them at any RPM we want. In particular it...
  5. scianiac

    How about a 3D printer section?

    Inpsecting the two 3D Maker engineering nozzles I have here I would say they are passable, inside certainly isn't polished smooth (I think they are cemented and minimally machined after) but that's fine with me. I don't think the added drag will cause any issues or at least it's never caused me...
  6. scianiac

    How about a 3D printer section?

    While they can be hard to find I think the Tungsten Carbide nozzles are the best all around nozzle for many applications. Their thermal conductivity is actually a fair bit better than hardened steel, they are of course super hard, from my experience are more durable than the ruby nozzles that...
  7. scianiac

    How about a 3D printer section?

    I haven't replaced a nozzle in years, I'm sure the one that's run many kg of NylonX through it is slightly worn but seems to print great. Tungsten Carbide nozzles on all my printers and cold pulls with PLA if they ever clog (wood filled occasionally clogs even with 0.6mm nozzles). Pros and cons...
  8. scianiac

    Tongsheng TSDZ 48v shunt value

    Unfortunately I don't have an answer but I am curious. Are you considering changing said resistor for a lower value perhaps?
  9. scianiac

    How about a 3D printer section?

    Yeah Nylon is great but is tricky to print and their seems to be some odd variability in performance of different brands, perhaps depending on CF fiber size? For instance I've tried some 3DX tech CF nylon which should in theory be of decent quality and it was utterly useless, like I can break...
  10. scianiac

    How about a 3D printer section?

    Yeah I thought you mentioned you replaced the hotend but then I misread your above comment swapping "hotend" for "firmware" for some reason. Yeah the new benchy chimney should be very telling.
  11. scianiac

    How about a 3D printer section?

    Is the Stock ender 3 hotend "all metal" IE does the teflon tube go into the heatblock, I can't recall but if it does it's generally not recommended to run them that hot. As for layer adhesion if you're temps are good (I generally print my carbon Nylon at 265 but 255 is probably enough to start)...
  12. scianiac

    How about a 3D printer section?

    The CF stuff really does make nylon and other warpy stuff waaay easier to print, also the best bed material I've found for nylon is garolite, which you actually need to turn the first layer temp down a bit or it sticks too well and damages the surface, although the damage is only superficial so...
  13. scianiac

    Noise-Reducing Grease?

    I've been looking for awhile for solid information on how greases and other lubricants effect noise but haven't really found anything. Most of the "Damping" greases are really meant for mechanical damping and sound damping over having unlubricated polymer gears and I haven't seen any evidence...
  14. scianiac

    CYC X1 Pro Fatbike

    It's probably less of an issue depending a lot on how abusive you are to your chain, which I'm probably a bit more abusive than some.... But for range the 9 speed stuff from Box and Microshift seems pretty good, you get all of the same range as many 10-12 speeds and the having exactly the right...
  15. scianiac

    CYC Pro Gen1 Belt drive

    Also I think the 11mm pitch of gates carbon for instance is way too large for such a compact reduction, but I would be curious to see if a maybe a narrower belt or a greater reduction could be had with some of these marketing claims that gates makes about how much better polychain, GT3, etc is...
  16. scianiac

    CYC X1 Pro Fatbike

    Very clean build, I've been strongly considering a CYC drive for my next bike (either that or a 2 stage belt drive reduction on a big outrunner) so very interesting to hear your experience. I'm curious as to how it handles deeper soft snow where you don't have the flotation, I assume fairly...
  17. scianiac

    CYC X1 Stealth (NEW)

    I just wish they would offer helical gears, assuming they can make the bearing geometry acceptable for the lateral forces this is the proper way to make it quieter without sacrificing durability by using brass gears. Even if it was a more expensive upgrade I feel like most would opt for it.
  18. scianiac

    How about a 3D printer section?

    Stringing probably isn't helped by temperature, good to check what temp the MFG recommends as any half decent MFG will give a reasonable range, the additives as the + part of the PLA may change the properties up or down temperature wise. Been awhile since I've printed any moist PLA but every...
  19. scianiac

    How about a 3D printer section?

    If I recall PLA is less susceptible to moisture, or rather absorbs it slower so if stored poorly will start to have issues eventually. A lot depends how moist the environment they are being stored in is. Obviously if you hear popping sounds any filament is way too wet but long before that you'll...
  20. scianiac

    How about a 3D printer section?

    Yeah ABS is great for many reasons but certainly has downsides, starting with PLA is definitely worth it to learn with for fume and temperature reasons. For mechanical parts I think the most important thing to understand about 3D printing is not what materials are strong vs weak but how to...
  21. scianiac

    is series 2x switchingmode power supplies safe for charging at 1C

    If you can take a quick peek inside and see if you can isolate the case that would be safer, if you just don't connect the ground on the case then that exposed case is now live and something metal could easily touch it at the other case. On many server PSUs at least it's just a matter of...
  22. scianiac

    is series 2x switchingmode power supplies safe for charging at 1C

    I'm not expert enough to say if there will be long term damage but I've done it many times with server PSUs, before you do anything though you have to make sure you won't have a ground loop. Most of these PSUs have the output negative tied to case and wall ground so you have to disassemble them...
  23. scianiac

    How about a 3D printer section?

    Yeah just build a box around the printer with poly-iso foam, move the electronics outside, and I use a 200W incan bulb hooked up to a PID controller. 200W plus the heated bed they heat up reasonably quickly, my largest printer has 2x 200W bulbs along with a large heated bed. Any heat helps...
  24. scianiac

    How about a 3D printer section?

    Not sure there is enough for a whole section but would love to here more 3D printer stuff around here. I use 3D printing a lot for both personal and professional uses and find 3D printing a bit discounted by most people in terms of usefullness. Parts that are designed to be 3D printed, printed...
  25. scianiac

    Hardware temperature control tsdz2

    I'm curious to hear what kind of temperatures you guys are getting with thermal pads between outside motor end and case and a heatsink plate as they seem to work well enough in my experience that I don't see a need for any extreme measures like water cooling. After all, we can't crank up the...
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