Quotenophead Also the sag in the bars due to the weight of the bed and the extruder make the bed appear to have a saddle shape. Is this sag guaranteed to happen over time? Does it mean I'm using poor quality rods? Or do they get replaced often? I'm waiting for parts but my plan is to solve this issue by doing the following: 1. Get replacement rods - one rod has a differential greater than 1mby ifrisbie - Printing
In Delaware and close to printing with my Prusa (if I can only get the bed leveled!)by ifrisbie - Pennsylvania RepRap User Group
Next printer I build I will definitely go metric. I originally assumed I would buy a lot of hardware locally but it turned out most hardware stores have horrible quality (and I couldn't get any metric stuff - esp 3mm items). Ended up buying most items online anyway - so you are right - will go metric next time.by ifrisbie - Vitamin Kit for Sale
- forgiving assembly - smallest variances now can translate to big differences when leveling the bed. Construction that would make if difficult to screw up would be a big plus for me at least. - Built-in 3D scannerby ifrisbie - General
I did a bit of an experiment and rotated the rods thinking that since the bend is only on one of the rod's axis then if I rotate it by 90 deg I will eliminate the vertical anomaly. Well, I did reduce it a little, but there is still a general downslope on one side and I only moved the differential from 1mm down to about 0.6mm front right side to back. So back to the drawing board on isolating thby ifrisbie - Printing
Hi, I need 4 I'm assuming this works on 5/16" rods as well as 8mm rods - but a warning to anyone willing to print it for me, please check before you print as I have an SAE kit (although I do have M3/M4 parts I can use - so the holes/nut holders can be metric). Can anyone print these for me? Thanks in advance! Ianby ifrisbie - Job Shop: I need stuff made!
The ones I have are warped and I can't get any quality from rods at my local HW shop (all are way more warped than what I have). Anyone have quality rods they can sell me? Ianby ifrisbie - Vitamin Kit for Sale
Unfortunately thats a bingo as Hans Landa would say. One is fairly obviously warped in the middle. The other has a very slight bend, but probably a forgiving one. Very frustrating. Any chance this could have been caused by the weight of the bed over time? I probably did have it in a centered position for up to 4 months. Anyone know a reputable place to get smooth rods that are actually stby ifrisbie - Printing
Well, I've changed a number of things but they haven't panned out for me: 1. I replaced the particle board platform with what came with my kit to a hard-plastic version - which I verified to be flat (the board certainly was not flat). I show how I have the glass and heated PCB mounted to it in pic 1327. Verified that with flat edge, glass is flat on diagonals. 2. I went from a 4 point spring-bby ifrisbie - Printing
I'd be happy if I could get the corner differences down to 0.2mm. I've checked the Y-bar height above the round (placed it on glass to ensure it was flat. the front two feet are the same, back to feet are the same - front and back differ by about 0.08mm. Seems to me that this relatively small difference couldn't cause a 0.4mm difference between the corners of the bed (3 corners being even - 1by ifrisbie - Printing
Quotenophead If the Y bars are not parallel you wont be able to level it, so that is probably your problem. This is one of the many issues I addressed with Mendel90. I should have read your reply more carefully. I now realize you said Y bars and for some reason I was thinking X. When you say parallel, do you mean parallel to each-other (top down view)? Or do you mean parallel to the resting suby ifrisbie - Printing
The clamps at the bottom for the Z axis were not aligned exactly with the Y-axis threads - I adjusted them, so X-axis bars should now be parallel. However, still have the same issue - didn't seem to help. Looks like you are going by the Mendel90 instructions. Although I use the same bed on my Prusa, I'm not sure I understand what supports the bed in the Mendel90 instructions. In my design I hby ifrisbie - Printing
Thanks for all the feedback. nophead - thanks, I might try that once all else fails, trying not to spend more money. stephenrc - not really following your recommendations. My adjusting screws are certainly not in the same position as the corners of the glass, perhaps that is the case for some Prusa variation, but not with mine. I have a much smaller under-base that is attached to Y axis thaby ifrisbie - Printing
Hi Everyone, First time leveling my print bed (w/ Heat) and I'm having some issues. I'm following these instructions: I just can't seem to get this thing level. Usually when I move to the secon diagonal I begin to have problems. The top of my bed is glass, so should be pretty darn flat. My springs came with a kit, they looked about the size of those that come inside pens, didn't look to iby ifrisbie - Printing
Thanks, someone PMd me already and I should have what I need soon. Thanks for the reply.by ifrisbie - Job Shop: I need stuff made!
In attempting to replace my plastic clips with bushings the plastic base busted beyond repair. I need a new one printed. Can anyone out there do this for me? I only need the base bottom piece. I don't want to buy a complete set, hoping someone can print just that part for me. Ianby ifrisbie - Job Shop: I need stuff made!
Well, it turns out that the v23r3 sanguino bootloader is not compatible with the arguino 0023 build upload. If I go back to 0018 and the 18r4 and replace the bootloader - I can successfully upload. Has anyone ever tried the 0023 with the 23r3 sanguino? If anyone else has upload troubles I know there is a warning out there already about the latest Arduino build - but please also note that buildby ifrisbie - Sanguino(lolu)
I modified my boot loader to echo characters I type in putty, so I can confirm that the bootloader is working and so is the serial port. The protocol is stk500. I saw a reference to someone questioning this so I tried changing it to stk500v2. In doing this I didn't get the error, but it basically hung forever never completing (seemingly doing nothing). It does appear that somehow the upload pby ifrisbie - Sanguino(lolu)
Solodude, I also used usbasp and I did have to reconfigure the ribbon cable. On your board it looks like this: X X (GND/RST) X X (MOSI/SCK) X X (VCC/MISO) On the Cable to your usbasp you likely have a 10 pin (2X5) ribbon that has all of the signals you need on the top side (meaning pins 1, 3, 5, 7, 9) on the bottom side you'll need only one of the GNDs and VCC if you don't have your sby ifrisbie - Sanguino(lolu)
I'm aware only of its relationship to the SD card. I'm very new at this as well and am still working on getting my board loaded with Firmware. The Auto-RST jumper was pointed out to me by another member - I missed it as well initially. If you have the hardware, I'd make it a jumper.by ifrisbie - Sanguino(lolu)
marnargulus, did you ever solve your problem? I'm dealing with a similar issue now and would love to hear the outcome of your saga.by ifrisbie - Sanguino(lolu)
A fellow group member pointed out that I was missing the auto-rst jumper. I corrected this problem but I'm still in the same boat. Any advice appreciated.by ifrisbie - Sanguino(lolu)
I believe the image you are referencing is for the rev 1.0 board . The latest versions replace it with a voltage regulator. My guess is that it was drawing 5V from it - but now it down-converts the 12 volts from the 2 X 2. I use a right-angle connector on mine.by ifrisbie - Sanguino(lolu)
Hi Jininjin, if you reference my board you can see my ATX connector - hopefully that helps. If its a matter of the correct part number I can dig up my parts list for you, let me know.by ifrisbie - Sanguino(lolu)
Thanks Kallio - I never noticed your post until now - might explain my comm problemsby ifrisbie - Sanguino(lolu)
Hi Everyone, I have my bootloader instaled (using usbasp) on my v1.3 board and am trying to use arguino to upload firmware. I've tried uploading on both my XP machine and my macbook and on both systems the com ports are recognized no problem. On my MAC I see this: Binary sketch size: 18450 bytes (of a 63488 byte maximum) avrdude: stk500_recv(): programmer is not responding avrdude: stk500_recby ifrisbie - Sanguino(lolu)
A general question about what SAE printed parts actually means. I know that as far as holes go (rods) it means 5/16". What about the nut traps? 6-32 sizing comes with the SAE vitamins kit, but he nut size is substantially bigger than an M3 nut. The printed parts I have seem to have M3 sized nut traps, but my SAE vitamins kit has no M3 bolts long enough for the Z-axis top clamps (4 bolts). Isby ifrisbie - General Mendel Topics
It will be a few weeks before they begin printing parts it seems, not for anyone who needs parts quickly.by ifrisbie - Plastic RepRap Parts for Sale
Thanks for the feedback, very helpful.by ifrisbie - Sanguino(lolu)
Hi everyone, I'm fairly new at this and was hoping to get some comments on the picks of my board. I was left a little confused about the 1.3a recommendations related to power and various unused connectors: 1. Latest info indicates that the R/A ATX4 is best choice in conjunction with the regulator? Does this mean also that the 3 individual 12V power taps near the motor connectors are not requirby ifrisbie - Sanguino(lolu)