Well it still works as well as it did three years ago but Neil Darlow maintains a more up to date version here: . I actually run an older version of Neil's with a few tweaks on my machines now.by nophead - Mendel90
The board support package for Melzi. It isn't an official Arduino so they don't support it. The one supplied with the kit is here: . You need to copy it to the Aduino hardware directory. I don't know if it works with 1.0.6 as 1.0.1 was supplied with the kit.by nophead - Mendel90
It looks like the Y pulley is loose or the Y belt isn't tight enough.by nophead - Mendel90
Sorry to hear your friend had problems. All kits were dispatched with 3mm hot ends with a 0.4mm nozzle. 1.75mm filament won't work. The thermistor used is this one: Firmware correctly configured for the kits is here: The instructions for the kit are here:by nophead - Mendel90
The firmware was supplied on the SD card shipped with the kit and you should have subsequently calibrated E steps and Z to customise it for your machine. If you have lost that version there is a copy here: but you will need to calibrate E and Z again. The line that effects acceleration is this one: . Early kits had this set to 4000, which did cause Y to skip for some people with short fast zigzby nophead - Mendel90
I don't use that code because it is more trouble than it is worth unless you use 40W heater cartridges, in which case you need it because they can burn your house down.by nophead - Mendel90
Runaway protection is pointless for a PCB bed heater and will just cause problems. The temperature is self limiting because the resistance of copper increases with temperature. It will max out at about 135C when driven with 12V, so nothing bad happens.by nophead - Mendel90
If it was a quality product they would use modern MOSFETs that don't need a heatsink and provide a bit more power to your heaters instead of wasting it heating themselves.by nophead - General
The wires don't move, so I don't see how strain relief helps, there is no strain. It is simply a matter of preparing the wire ends well and tightening the terminals sufficiently. My machines have run for years without any interconversion.by nophead - Mendel90
For a given volume of wire and magnets: arranging them in a long thin form factor reduces the rotational inertia because it is proportional to the radius squared times the mass. That is why long thin motors exist. For a given volume of wire, whether a motor is high voltage / high inductance or high current / low inductance depends on how thick the wire is. I don't think form factor affects inducby nophead - Mechanics
There is no difference in the volume extruded, or the resulting filament width but it does affect how much the filament needs to be stretched after it comes out of the nozzle. So it does affect whether bridges droop or snap and also affects corner radius and curling, etc. However these two sentences from the slicer manual are wrong: Quote As said above, there's only one correct flow rate for briby nophead - Ormerod
Nozzle diameter does not determine extrusion width when filament is being laid down in an object. It only affects the diameter when extruded into mid air. While Slic3r fails to recognises this fact I will not use it.by nophead - Ormerod
The only issue I get from extreme slowdown is it no longer spans bridges well because the die swell is reduced at low pressure.by nophead - Mendel90
ABS is still pretty viscous at 250C so it doesn't ooze much. I think ooze while extruding would only be an issue if it was faster than the required extrusion rate. I.e. it doesn't really add to the extrusion rate, simply sets a lower limit on it but that is very small indeed.by nophead - Mendel90
>but it will never lower the speed below the minimum speed Perhaps that is problem. I use Skeinforge that has no minimum speed, so never need to use a fan for ABS and can print very small items.by nophead - Mendel90
> Is it the idea of using a flat sheet for the XZ part of the frame? Is it using two steppers to drive the Z screws? Is it using threaded rods for the Z axis? All the above? No actually none of the above were new ideas in the I3. The first moving bed Y axis Reprap was the Sells Mendel with two lead screws but a single Z motor. Prusa introduced two Z motors at the top in his I1 and I2 versioby nophead - Printing
So 11.67mm/s, quite slow. When I print tiny areas my printer slows down so much each step is a tick. I.e. speed goes to almost zero to allow very small areas to take 20s.by nophead - Mendel90
>slowest perimeters are still at over 700 mm/s That is way faster than the printer can move!by nophead - Mendel90
I would expect it to print with a minimum layer time of 20 seconds.by nophead - Mendel90
Yes it is a small, but it is long and thin so has a high surface area, so it shouldn't be a problem if you slow down enough. What plastic are you using?by nophead - Mendel90
@daichiasuka, yes the E3D branch of Mendel90 has scad files that correspond to the STLs in it. @demetris, I print the Wade's block with 95% fill, 0.4mm layers by 0.6mm. Sometimes I can do that with a 0.4mm nozzle, sometimes I ream it to 0.45, it depends on the ABS die swell.by nophead - Mendel90
How are you measuring it? If it is by measuring a print some of the discrepancy will be plastic shrinkage. Perhaps your belts are inaccurate or not stretched tight enough to meet their spec. I don't know what tension belt pitch is quoted at or how much difference tension makes.by nophead - Slic3r
Yes it standard practice to put an M8 washer in the socket. If you are re-printing it there is a version specifically for E3D here: . It will get you back some of the Z height you lost. Also there is a fan duct and bracket in the same branch.by nophead - Mendel90
If it is a Cartesian bot then an Arduino is fast enough unless you start adding full graphics displays. For deltas and other non-linear kinematics you want an ARM.by nophead - Controllers
No it is a thin coating but perhaps not thin enough?by nophead - General
>So you got a faulty product and hopefully returned it for compensation? Your linked type of bed is very well able to print with 120°C, maybe even more. I didn't try to use the warped one until more than a year old so I didn't bother trying to get compensation. The one I do use is disappointing because every print leaves the surface uneven. Also the bottom of the objects is not flat because tby nophead - General
I bought 2 of these PEI coated ALU beds on eBay. One is not flat so I haven't used it. The other one has indentations and blisters where I have printed ABS on it. The PEI doesn't seem stable at ABS temperatures (110/ 250). I prefer diffused glass as I get a better finish on my parts and it never degrades.by nophead - General
A USB cable won't get hot unless you pass a few amps through it. It will then have a voltage difference between the two ends. Have you tired measuring between ground at each end of the USB cable?by nophead - RAMPS Electronics
There is more pressure involved when building an object than extruding at the same rate into thin air but it seems odd it would make so much difference.by nophead - Mendel90