cdru Quotecdru You may be surprised at how fast you'll need to move if you want to complete a project in a reasonable amount of time. A typical embroidery machine does 800 stitches/minute or 16/second. I just watched a video that had some commentary on stitch rate 960/minute, are you in the embroidery biz? Engine Room - Part 1 SV Seeker .... and I'm curious if rogerclark has moved forwardby A2 - General
Printing woven structures in fibrous materials I imagine the yarn could be replaced with copper wire, resin coated and UV cured to create large embedded objects.by A2 - Wire and Thread Embedded Extrusion
Substrate Release Mechanisms for Gas Metal Arc Weld 3D Aluminum Metal Printing To cite this article: Haselhuhn Amberlee S., Gooding Eli J., Glover Alexandra G., Anzalone Gerald C., Wijnen Bas, Sanders Paul G., and Pearce Joshua M.. 3D Printing and Additive Manufacturing. -Not available-, ahead of print. doi:10.1089/3dp.2014.0015. Online Ahead of Print: November 12, 2014 Michigan Tech developeby A2 - General
@VDX, Tks, So I'm thinking that in the case of the servo belt, if I apply tension to the stationary belt opposite to the tension being applied to the belt winding around the drive pulley I could reduce backlash?by A2 - Mechanics
@VDX, This sounds neat. Can you provide a pic or something to help me better understand the concept.by A2 - Mechanics
Electrospinning and additive manufacturing: converging technologies Free view This content is free, please choose one of the three options provided in the Log in section to gain access. Presentationby A2 - Tissue Engineering
Price starts at $26,000. I'm unsure of how it's driven, possibly a magnetic linear drive, or a rack?by A2 - General
Quotethe_digital_dentist motors gets out of sync What do you attribute two motors getting out of sync too? Tks.by A2 - Mechanics
Great contribution LoboCNC! Tks for posting the non stabilized video Is that an aluminum nozzle, Nichrome wire heated hot end, and Teflon tape wrapped? How did you connected the nozzle to the tubing?by A2 - General
Agree, the "Delta" looking Renishaw Equator 300 design configuration is interesting.by A2 - General
@[email protected] I noticed that your Y? axis is racking. After you figure your problem, consider adding an anti-racking cable system. It's possible to use an anti-racking system to drive your axis, but that would entail a redesign of your pulley locations.by A2 - Reprappers
It looks to me like the idler belt pulley is retained by tension only, is this correct? Possibly there is some flexing or movement in this component. You stated that if you remove the belt the vibration is eliminated. The belt looks like it's installed backwards, is there a twist in it? If your time/energy permits I would like to see if the GT2 belt makes any difference.by A2 - Mechanics
I like the idea of threading the glass tube but it's easy to snap off in the current configuration. Sandwiching the glass tube between end caps might be difficult to achieve a sealing surface (looking forward to see what your test reveal), and I agree that it might be difficult/impossible to remove the glass tube pocketed in waterglass (Sodium Silicate) bonding agent.. I do like the approach ofby A2 - General
Idea: Example: some resistance heaters are clamped in place with a bolt passing through a slot. Why not slot the hole that holds/locates the glass tube in the heater block, add some waterglass (Sodium Silicate) to seal it, note it swells with heat so a little goes a long ways, and clamp it. I think the hoop stress, and adhesive properties of the waterglass will be sufficient to hold the glass tby A2 - General
Look for ideas and help here:by A2 - Reprappers
I would like to see a drag knife software solution as well. I was thinking of a rotary cutter that is mounted off center of the axis of rotation. But I don't think it could make cut outs in cardboard. This company selling SheetCAM software for 25 pounds.by A2 - Developers
Test: Bring the hot end up to temp with PLA, wait 2 hours, then check to see if the heat migrates up the filament and jams in the cold end.by A2 - General
QuoteJude The basic question for metal and Reprap is are we willing to accept a post print function? Absolutely, as well as finish machining, etc.by A2 - Developers
An amalgamate of metal powder is commonly created with fiber cutoff wheels. I suspect that that resin, and fibers from the wheel is bonding the metal together. If there is some metal to metal fusion taking place, possibly the resin from the wheel might be providing an inert shield? This is a good video to spur creative thinking, tks for sharing.by A2 - Developers
Electroplating SS is not advised. At home I've plated a copper strike onto SS but it's not durable, and take a lot of energy. Best to begin with a different base metal. Surface finish is not improved with electroplating, all machining details are faithfully reproduced. Begin with a smooth surface.by A2 - Developers
QuoteLoboCNC As a potential bonus, it would be really nice to monitor the servo error of a closed-loop controlled stepper - you could detect stalling (very large error), stripped filament (very small error) and also loss of filament altogether (zero error). Minimizing slip without crushing the filament presents an interesting system design problem. More important is accounting for this slip inby A2 - General
@wtent, Thank you!by A2 - General
Use Nylon or you could also cast a filled epoxy over the model to create a more robust mold, or plug.by A2 - General
Out of curiosity I searched for (PCL scaffold DMSO). DMSO, dimethylsulfoxide is very safe, and has the potential to be very dangerous as it can be used as a chemical delivery device, DMSO can transport chemicals through your skin and directly into your blood stream. I'm wondering if your gel phase can be improved with DMSO, but I don't know, it was just a thought. Found a patent that mentionsby A2 - Tissue Engineering
@crob09: tks, and no worries if you can't disclose it's source.by A2 - MetalicaRap
@crob09: Where did you purchase the Alpha Aluminium Oxide powder (a-AI2O3 @ 10um)? tks.by A2 - MetalicaRap
diegotrap Cool tool One suggestion, it looks like the filament axis is on the same plane as the cutter axis? The filament cutter might perform better if the filament was located about half of the diameter below the axis of the cutter axis.by A2 - Plastic Extruder Working Group
QuoteaEx155 I ran into some issues What issues? To be clear, is your X-axis supporting the hot end? if so at some point it's going to twist, you are moving more mass, and you're going to poke your eye out. Your previous efforts were looking great, I'm not sure what problem you're trying to solve.by A2 - Mechanics
@Saurabh Lanje: Very nice Looking forward to watching a video it operating! Where did you source the worm, and worm wheel, and what resolution can you resolve?by A2 - Polar Machines, SCARA, Robot Arms