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Rostock, Kossel, Simpson, 3DR, and more. See: http://reprap.org/wiki/Category:Delta. Previously named "Delta Robots and Stewart Platform"
Re: Multiple Heatbeds - 9 years ago
Depending on the power requirements of the two heatbeds, you might be able to wire them in parallel to the same output?by frankvdh - RAMPS Electronics
Re: Dual Spiral Lightbulb / Week of June 09, 2012 - 9 years ago
Open the given example in (e.g.) FreeCAD, mirror, and union. You'll have something very close to what you want.by frankvdh - Competitions
Re: What Z artefact is this? - 9 years ago
The point of the frame is to hold the rails in place, so that the axes move in the right direction. Those other printers don't have frames because they (hopefully) have some other way of holding the rails in place. I guess you could print (or otherwise fabricate) reinforcement pieces to attach to the acrylic to improve its rigidity.by frankvdh - Printing
Re: first print help - 9 years ago
How many solid layers are you printing for the top/bottom? You should be doing 3 or 4.by frankvdh - Printing
Re: Dual Y Axis Steppers - 9 years ago
If the belt slips, that would be perfect, because after it slipped, it would be in the right position. Unless it also slips when the bed isn't against the endstop. Whether the stepper misses a step before the belts slip depends on the belts. If they're GT2 timing belts, then it will take a lot to skip a tooth. Parts would have to be weak to break before it skips a step. You can turn down the curby frankvdh - RAMPS Electronics
Re: Dual Y Axis Steppers - 9 years ago
I think you're over-thinking this. If your Y-axis motors are out of line, then *once* when you home the Y axis one or other will skip a few steps. Thereafter they will be in line. If they don't stay in line, then you have some other problem that needs addressing (friction in the movement, low current to the motors, whatever) that needs to be addressed. End-stops don't stop the carriages gettingby frankvdh - RAMPS Electronics
Re: NEW rigid.ink Filament - 0.03mm+/- *FREE Samples for RepRap forum users* 1st come, 1st served. - 9 years ago
Me too... except it was a 5GBP charge for me!by frankvdh - For Sale
Re: Full Color 3d Printer Project - 9 years ago
Some semi-random thoughts on coloured 3D printing... Looking at other technologies... Initially, monitors were monochrome, but then 4 colours (CGA, 1981), 16 colours (EGA, 1984), 256 colours (MCGA, 1987), and eventually 24-bit colour (SVGA, 1990) became the norm. Once colour was introduced, the rate of change was rapid. 2D printers have skipped the intermediate stages and gone fairly directly frby frankvdh - Developers
Re: Help with extruder stalling issue - 9 years ago
First thing I'd try would be to switch the connections so that your (say) Z-axis stepper is connected to the board's extruder connector. Now, when you tell it to extruder, does the Z-axis move? If not, the problem is at the board. To confirm, you could connect your extruder stepper to your (say) Z-axis connector. Remove the filament from the extruder (other wise this may try to push filament intby frankvdh - Printing
Re: Help with extruder stalling issue - 9 years ago
Can you post a link to your video? Loose or near-broken wires on the extruder which disconnect when the X axis is near zero? Unlevel bed in the X axis? (Assuming this happens on the first layer)by frankvdh - Printing
Re: Over extrusion only on solid infill - 9 years ago
Playing with this a bit now... One thing I noticed was that manually issuing 3-4*5mm retracts followed by 4-5*5mm extrudes seemed (usually) to clear the problem. I also tried running the print with the nozzle 10mm above the bed and it still clogged! Once cleared, So I think my problem is nothing to do with nozzle height... it's something happening inside the extruder. I've tried changing theby frankvdh - Printing
Re: Over extrusion only on solid infill - 9 years ago
I've been experimenting a bit... It seems that part of the problem is that my filament is quite a bit bigger than the nominal 1.75mm. I also have (supposedly) 0.5mm nozzle. I'm not 100% sure though, it being cheap Chinese. I suspect it may only be 0.4mm. Maybe also part of the problem is slop & movement in my linear bearings causing Z movement of the head. If you're printing one layer in oby frankvdh - Printing
Re: Print request - 9 years ago
Your first link (Prusa i3 Rework 1.5 ) only has a washer as the only part at Thingiverse???by frankvdh - New Zealand RepRap User Group
Re: Over extrusion only on solid infill - 9 years ago
I am working through the same kind of issue... please post when you come to a solution. My current theory is that my Z steps/mm is set wrong.by frankvdh - Printing
Re: one stepper +5 filaments = dog box shifting! 
- 9 years ago
QuoteFeign It appears that the Pallette takes in the g-code, starts queuing up the filament bits and sending them in one constant fused strand to the printer, and then it passes along the g-code to the printer once the string is 'full'. Yeah, that's how I read it too. I think that colour change precision would be limited by the precision in allowing for the lag between Palette and printer.by frankvdh - Developers
Re: Print request - 9 years ago
Where are you? How big is this thing you want printed? I've only got a little 100x100x100 PrintrBot. If it's small (and you're happy with PLA, I can do it. But I'm still struggling to get my printer reliable. So I'll be more than happy if someone else can do it for you. Frank (in Marton)by frankvdh - New Zealand RepRap User Group
Re: Hot End Temperture falling for no reason - 9 years ago
What he said ^ Also check the thermistor isn't loose in the hotend.by frankvdh - Controllers
Re: one stepper +5 filaments = dog box shifting! - 9 years ago
@Olaf... G-code doesn't include colour. The slicer would have to generate G-code commands to change extruders at the right time. I guess in your scenario that would involve stopping the head, heating the new extruder, switching to it, then starting the head again and extruder. A couple of thoughts on this... Why not keep all extruders hot all the time? If you always change extruders when the mby frankvdh - Developers
Re: Prusa i2 - Wades Extruder Jamming - 9 years ago
The key things I found when I switched to a (Chinese) E3D was a fan with a shroud around the heatsink, and minimal or no retraction.by frankvdh - Printing
Re: Prusa I3 Z axis problem - 9 years ago
Did you reflash your firmware or something before the problem started? I assume that when you say "10mm cube" that that's as defined by the STL model or whatever. So what is the measured height of the 10mm cube? Is it actually 10mm? Regarding the weird Z-home thing... sounds like the polarity of the Z-home switch is inverted... there is a setting for that in Marlin's Configuration.h file.by frankvdh - General
Re: e3d v6 problem - 9 years ago
Quotetrist077 just looked on youtube and there should be a small bolt and washer holding thermistor in guess what mine never had one but i guess that what you get for buying secand hand I have 2 Chinese hot ends, both claiming to be E3D V6. One has a small screw and PTFE washer to hold the thermistor in, the other doesn't. On the second one, the heater cartridge and thermistor wires are taped toby frankvdh - General
Re: Printer Messed Up - 9 years ago
Increase the tension on your extruder spring.by frankvdh - General
Re: started designing a new mostly-plastic reprap SCARA with fishing line motion transmission and unorthodox winch for Z - 9 years ago
I'd definitely suggest a locknut... the string will be applying torque to the screw, and while the torque is enough to overcome friction, will loosen the screw.by frankvdh - Polar Machines, SCARA, Robot Arms
Re: Can Slic3r use a postprocessor written in Java? - 9 years ago
Can you run anything else that way? e.g. try this command line... CMD /C DIR When you built your HelloWorldDemo.jar, was it built as a command line application? Or as a Java GUI application? i.e. when you run it from the command line, does it pop up a window, or does it just write to System.out (aka stdout)? I suspect that any GUI type application won't run from within Slic3r.by frankvdh - Slic3r
Re: Mechanical things to print - 9 years ago
http://www.thingiverse.com/thing:328569by frankvdh - Printing
Re: Curved paths - 9 years ago
Oh, do me a favour... Now you're saying that *this* isn't ad hominem: QuoteLOL! You are trying to make this into a panacea for all printing woes, which is quite absurd, And this is a copout: QuoteThank you for making this into an ad hominem argument, it allows me to disregard any of your further arguments I conclude that you don't actually have any basis for your assertions (given the lackby frankvdh - Firmware - experimental, borrowed, and future
Re: Z offset can't remain consistent from print to print. - 9 years ago
If you ran your M48 commands one after the other without doing anything in between (e.g. lifting a print off the bed), it won't show up a mechanical change caused by whatever that action was.by frankvdh - General
Re: Curved paths - 9 years ago
QuoteAndrewBCN Quotefrankvdh I see some direct benefits in moving to curves: 1. Better quality of output due to smaller approximations, more accurate placement of the head, no jerking acceleration between segments, more consistent thickness of deposited filament due to more consistent speed of the nozzle. 2. Probably faster printing since higher speeds will be able to be maintained. 3. Maybe alby frankvdh - Firmware - experimental, borrowed, and future
Re: Curved paths - 9 years ago
Thanks George... Just for clarification, I'm not proposing to use Bezier curves. I just happened to use that example because it conveniently went from one curve endpoint to the other, unlike Bresenham and similar which work in one octant and then mirror that to generate the entire shape. With Bresenham it is therefore inconvenient to draw an arc which crosses an octant boundary (e.g. an arc fromby frankvdh - Firmware - experimental, borrowed, and future
Re: Curved paths - 9 years ago
I see some direct benefits in moving to curves: 1. Better quality of output due to smaller approximations, more accurate placement of the head, no jerking acceleration between segments, more consistent thickness of deposited filament due to more consistent speed of the nozzle. 2. Probably faster printing since higher speeds will be able to be maintained. 3. Maybe also less vibration, consequentby frankvdh - Firmware - experimental, borrowed, and future