Belts weigh less, are faster than a leadscrew, and eliminate the transfer of unwanted movement from a wobbly leadscrew, but there are workarounds for that. For guides you also have the option of using V-slide, OpenRail, or makerslide rails.by A2 - Reprappers
On a noisy desktop computer fan I placed an 8 inch flexible aluminum ducting commonly used on clothes dryers. Cut it to the length you need, don't obstruct the end. I just let it drop to the floor, the computer was on top of a desk.by A2 - General
All you need is a stepper motor, leadscrew, and the guides. My DLP design: Reprep Petriby A2 - Reprappers
I like your project, can you give us an update of your thoughts, and progress. QuoteGordie (The linear guides used are IGUS Drylin T more specs here: and here: I'm not a fan of applying plain plastic bearings to all axis for this machine some is OK, (below I explain more). I think the start-up friction (a minimal concern), and the low bearing preload (more importantly) is not ideal for milby A2 - Extruded Aluminum Frames
I've read that style of extruder looses filament tension, and the hob slips, and periodically has to be manually adjusted. Ask some one who has used it for feedback.by A2 - General
@vreihen : Here ya go, and I hope you heal fast... Build your own CT Scan, (Computed Tomography), or Cat Scanning, (Computed Axial Tomography): 1. 2. 3. 3D Slicer – Open Source Software for CT and MRI Radiology 4. Portable EEGby A2 - General
Do have your friend take lots of pictures of the different stages of fabricating If you supply me with a design that I can reverse engineer, I can supply you with the appropriate CAD files. I have long term plans to build my own desktop WEDMby A2 - General
Your personal use of the object dictates the technology, method, and materials to employ. Something is only better based upon ones assumptions, and expectations. Narrow the scope of your query.by A2 - General
This is such a good step in the right direction, I'm very excited to see this implemented, and evolve Is it possible to attach additional Reprap forum threads to the wiki, and what about attaching external forum or webpage/blogs to the wiki?by A2 - Administration, Announcements, Policy
@Traumflug: I didn't suggest tape I do agree with you that it should in addition being mechanically retained, incorporate a high temp bonding agent, maybe with muffler repair cement (Water Glass: Sodium Silicate), high temperature silicone, or a high temperature epoxy. Quotebillsprototypestudio If you are worry about it, you can use some kapton tape to affix it. Here are all my links pertainby A2 - For Sale
Most people don't have your skills, strength, dexterity, control, or expertise to form things with the correct amount of interference, and of the correct geometry. Tugging on the termistor leads to verify that the paper clip hack is intact is not advised, as the fine wire of the thermistor could fail. If there is a gap between the tag end of the wire and heater block the wire could work it'sby A2 - For Sale
OK, I understand now, tks. So one forum post would be a sticky, and paired to a wiki page.by A2 - Administration, Announcements, Policy
billsprototypestudio you should redesign your hot end with a mechanical thermistor retainer, what you and many other mfg of hot ends are doing is not safe. Eventually Kapton tape will soften, and adhesion will be lost due to the heat, then the thermistor is free to fall out, either a melt down, or fire will ensue. Any way to attach thermistor and heater besides tape? Fire Hazardby A2 - For Sale
Unless you weight the end effector down greater than the force exerted by the extrudate, the extrudate will have a lifting force in the Z-axis.by A2 - Delta Machines
Awesome Then some one with wiki skills could extract pertinent notes, and embed them into the main wiki page. I just posted a "Test" comment, and I didn't need to log in, nice! Please delete it. I reviewed the "Recent Changes" link , and I didn't find my post. How will we know there is a new comment posted?by A2 - Administration, Announcements, Policy
Testby A2 - Firmware - experimental, borrowed, and future
I don't see how the thermistor is retained from falling out, potential fire hazard if you don't rigidly affix the thermistor to the hot end.by A2 - For Sale
Quotekolergy - The system guiding the wire is not precise enough to make fine welds (<2mm) I have an idea that needs implementing I watched your videos, would using a MIG nozzle help? I also wonder if you diverted some gas into the wire feed tube would that help as well? Quotekolergy I do not see any reason why it would not work for a Cartesian, preferably one with a fixed plater as for welby A2 - Firmware - experimental, borrowed, and future
The Z-axis bed needs to be leveled and orthogonal, and if not perfectly aligned in the Z-axis, it will have pronounced projection error the further it moves away from the nozzle. Moving the bed only in the X-axis (longitudinally) does not have projection error, it only needs to be leveled. A couple of advantages of a completely stationary bed are: Requires less or no calibration between prints.by A2 - Developers
Unshielded twisted pair I read that you should use clockwise and counter-clockwise twisting between pairs, and different twist ratios between pairs within a common sheath.by A2 - Controllers
Cool project Looks close to being finished, when will you print your first cool thing? What are the advantages of using a Delta printer for CNC welding, and what would have to be done to mod this for a Cartesian printer? Tks!by A2 - Firmware - experimental, borrowed, and future
Tks for sharing. Can you post a pic of the hot end, I'm curious of the bolt location, and orientation that retains the heater cartridge, and what hot end is it? How much time has it been since the bolt was last tighten? Is the wiring inflexible, and did that pull the heater cartridge out?by A2 - Safety & Best Practices
igus: iglidur tribo filament. igus Bearing filament I think with any of these engineered materials co-extruding with filament will take object creation to a higher level of performance. Additive wire layingby A2 - General
The clearance under the Y'axis gantry is the maximum Z-axis build height. To increase build height you need to raise the nozzle to just below the Y-axis gantry lowest point, and to increase the "over-all" Z-axis build height you need to lengthen the Y-axis side pillars, which then necessitates a new longer Z-axis stage.by A2 - General
WEST SYSTEM #423 Graphite Powder - 12 OZ Model # 323659 | Mfg # 423 $17.99 I've used West System #423 Graphite Powder with epoxy, and found it to be a very fine dust/powder.by A2 - Powder Printing and Selective Laser Sintering
To gain Z-axis height, the side pillars that support the Y-axis gantry would need to be increased in length.by A2 - General
@VDX, how many watts do you recommend, and the laser cutter is a cool suggestion I was thinking a design that was similar to suture scissors would work, coupled to a solenoid, or servo motor. Suture scissors have a half moon (circular) cutout on one of the blades at the distal end which makes it easier to slip the tip of the scissor under a suture to cut. I was thinking that the circular cutby A2 - Wire and Thread Embedded Extrusion
Occasionally I'm getting this error thrown: 500 Internal Server Error, nginx/1.4.7 Unsure if this relates: This could be anything. Maybe your PHP(?) is running out of memory, so you'll have to configure "memory_limit" in php.ini to a higher value. Just one idea. Without any further information it's impossible to guess.by A2 - Administration, Announcements, Policy
Tks Looking forward to your implementation of cutting the wire.by A2 - Wire and Thread Embedded Extrusion
Available: Delrin/Acetal/POM (homopolymer/copolymer), PET, or PETG, Polycarbonate, Nylon, Polyurethane.by A2 - General