I'm using lithium as I had some around from my bike. It works great, and as far as I know doesn't have any long term effects on the strength of ABS unlike other greases.by yellow_fish - Reprappers
Like the look of this too, its a pretty novel (to me at least) x axis configuration. Do you think this is physically better or just another take on other vertical x axis? Not wanting to be critical, just curious if I should be making a similar change when I upgrade the frame of my Prusa V2, the falcon looks like a strong contender if it is!by yellow_fish - General New Machines Topics
Now that I've got a printer accurate to +/-0.1mm I'd really like a scanner that's capable of the same. I'm not all that sure what's out there so would really like some pointers. Wish list: 0.1mm resolution handheld/mobile - it needs to operate inside the cabin of a car for scanning the interior trim must cope with reflective surfaces (I know this is a bit of a killer, but it will be working neaby yellow_fish - 3D Scanners, Book Scanners, and Optics
Hi everyone, I'm trying to configure Marlin to turn my psu on an off with M80/M81 using a Sanguinololu 1.3a. What pin should it be assigned to? I'm currently using pin4 for the fan. and am using an SD card so most breakout of the pins are taken already! Thanksby yellow_fish - Sanguino(lolu)
I use Repetier 0.82b and would really appreciate being able to store files in a single folder, independent of the machine for exactly the reason Enlightx stated. I can do this with skeinforge but not slic3r which is a bit of a pain.by yellow_fish - Slic3r
qawsed Wrote: ------------------------------------------------------- > ... inner loops of curved perimeters are not > fully sophisticated. This is the reason I moved to skeinforge. I really like slic3r's interface but how it deals with curves is not ideal and I've found a couple of objects unusable when sliced in slic3r because of this.by yellow_fish - Slic3r
I had a similar thing happen to me, took the LM7805 and all stepper drivers out... I think yours might have gone the same way! I don't know of a way to test other than putting them in and trying them but if the voltages read right (as in power and earth) and the heater is being read correctly then I'd assume that the chip is working, so infer that the drivers are blown. Thinking about it, you shby yellow_fish - Sanguino(lolu)
I had exactly the same problem, although my solution was fairly long winded! 1) use a sheet of aluminium covered in PET tape to print onto, mount the PCB to the underside of this. 2) Relocate the mosfet for the heated bed to the aluminium sheet, this involved breaking some tracks on the sanguinolou board I was using, I have no experience of RAMPS 1.4. Basically I took the PWM signal and earth frby yellow_fish - General
I used slic3r and didnt liek the fact that no matter how much I tweaked my calibration I could not get accurate holes. So after all that faff I started learning skeinforge. I'm pretty new to printing but one of my key aims for my printer is to accuratly reproduce the CAD model. That means I want dimensional accuracy, hence skeinforge. As soon as slic3r implements a stretch function I'm switchingby yellow_fish - General
bobc Wrote: ------------------------------------------------------- > Those are great value for the price. Did you do > anything with the fan? The fan on my mine is > pretty noisy even after reducing the voltage to > it. They really are, I have a few left over too for my next printer(s). 40A supply for under £20 is pretty unbeatable! I struggled to find a PC PSU that had high currentby yellow_fish - General
Alternatively you could use a hot swap server power supply, they have high current 12V rails. My prusa is powered by one of these doing the conversion here. I ended up with 4 of them as they were very cheap, message me if you want any more info!by yellow_fish - General
epareja Wrote: ------------------------------------------------------- > the output filename is assigned in skeinforge > itself so I don't know how to change it. I thought > about it too . It's a shame that skeinforge doesn't have an easy way to rename the output file really. Hopefully someone else will notice this thread and give a suggestion! > I made a version 0.2 that included cby yellow_fish - General
epareja Wrote: ------------------------------------------------------- > Yesterday was frustrating trying to find a > solution to run PyPy as a python interpreter for > Skeinforge. > > I designed a small application for windows 7 > (should work on others but I haven't tested yet) > to run Skeinforge with PyPy interpreter without > messing with console command line. >by yellow_fish - General
Worked it out, Had the extruder calculated off Relative Extrusion Distance, not Absoluteby yellow_fish - Skeinforge
I've recently got my printer (prusa v1) up and running and was happily printing using Slic3r, but I've been having issues getting hole to come out the right size so wanted to try skeinforge to see if it improved matters. Currently I can get skeinforge to produce some Gcode but when I try to print the hot end moves around happily and the extruder turns, but not enough to actually extrude any plasby yellow_fish - Skeinforge
Thats an idea, I though that solid filament would avoid the need to pressurisation to remove air from inside the filament. Surely if you use a pipe then you would need to remove the possibility of trapped air inside the filament once it's extruded. or am I missing something? Also trying to cool and insulator might be quite hard, what other materials have low friction but high heat transfer properby yellow_fish - Developers
Just a thought on the notion of safety features, would it be possible incorporate any kind of debugging on the board, like green LED for working and Red for blown or similar? That way the novice stands a much better chance of debugging dead ICsby yellow_fish - Next Wave Electronics Working Group
Just wondering, after seeing the developments of the Filabot, would it be easy to make a small extruder that can rework 3mm filament into 1.75mm for us brits which have to pay extortionate amount for thinner filament? Surely since the plastic is already in rod form there wont be the issues of compressing and removing air from it before extrusion and we already have pretty decent extruder for makiby yellow_fish - Developers
yydoctt Wrote: ------------------------------------------------------- > How are you going to overcome die swell? The > images show a series of rollers, though that will > simply squish the filament in one direction, > making the cross section an oblong - unless I'm > missing something? > It's a project that has been discussed a few times > here, that I've seen, so congratulaby yellow_fish - General
Just a thought, would increasing the rod diameter remove the necessity for harder rods as the load is spread over a greater area? I know that the pressure is not evenly distributed and have no idea about the raceways in the LM-UU bearings so this might not be a valid point at all.by yellow_fish - General
Fair enough, I retract the comment about limits of plastic. Although I still feel that interlayer bonding can be improved. If anyone has anything they want modelling, give me the data to model and I will do my best to model it, for example frames ect, especially for vibration as that appears to be more of an issue than deflection due to static loads. As an aside, if anyone can give me a rough sby yellow_fish - General Mendel Topics
I want to start getting some printed parts hosted but need to know a couple of things first, and there all to do with what can be expected from the average RepRap. 1. Is there any ability to create support material and if so what are the limitations? 2. If there is no option of support material is the max overhang angle 45 deg? 3. What is the dimensional accuracy that people tend to be able tby yellow_fish - Developers
The Rexroth only sell M6 and M8 t nuts for their 10mm groves. This reflects how strong the 10mm grooves are and the pressure they can take. Using smaller screws seems a little pointless to me as you can't fully exploit the strength of the construction system. No offence meant by this but to me is seems a bit stupid to print T nuts which are not as strong as steel (or even Al) for use in a strucby yellow_fish - General Mendel Topics
A vertical axis will be much more resilient to binding than a horizontal axis. Ive be toying with the exact same idea but never left my head onto paper (let alone a CAD model). Another way to combat this would be to slightly extend the x carriage. Since the stepper is no longer mounted on it the carriage can be made longer without loss of build area. The increased length will reduce the force sinby yellow_fish - Mechanics
bit more digging on rs and found that the 20x20 is only £15 for 3m, £5/m seems pretty decent. The fixings are very expensive but brackets are not hard to make, especially if you have a CNC mill! the groove for the 20x20 is 6mm, M3 square nuts a 5.5mm and m4 are 7mm. The M3 wouldn't be a perfect fit but it's diagonal length is 7mm so would lock into the groove without rotating. Personally I don'tby yellow_fish - General Mendel Topics
Personally I would not want to thread Al for any thread diameter greater than the thickness of the nut. My experience making a test rig out of 40x40 Bosch Rexroth showed that any home made t-nuts should really be made out of steel if there is any expectation to be able to tighten it satisfactory. This was mainly due to the fact that there is not that much depth to the slot. The wall thickness ofby yellow_fish - General Mendel Topics
Bad luck with the first design, but then these things take time to perfect! And yeah your right about the daughter board, I'll just rebuild with the current state of the art when I get round to making it, and to be honest that seems the best way with reprap by far! Hope you do get these working though, it would be great if there was a 2nd option to pololu.by yellow_fish - Next Wave Electronics Working Group
fair enough. I'm using Sanguinololu 1.3a as opposed to Gen7 but I dont think that makes a difference. Is there any chance it could overhang the socket? I know it would look messy as hell but could it work? Just I'm planning another Reprap soon and have a spare Sanguinololu board but no stepper drivers and the Toshiba are so much cheaper!by yellow_fish - Next Wave Electronics Working Group
I thought that the drivers were to reduce cost? They significantly cheaper than the pololu given they are £2.30 vs £11 for pololu. They are also easier to heatsink plus have a higher current handling. I know that the A4988's have current limiting circuits but this allows the board to drive higher current motors for milling ect. I also think that developing an alternative driver to the pololu isby yellow_fish - Next Wave Electronics Working Group