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Re: Cheap 3D printer - 9 years ago

I figured out what the skipping was (it wasn't really skipping just running to the end of the axis occasionally and then jumping the belt), It looks like it was lose connection or crossover between cables as after moving them apart I haven't had the issue again. I suspect you might be right with the carriage being a modified part. I guess I will need to look for different one to print out if I c

by plastic_splodge - General

Re: Cheap 3D printer - 9 years ago

Though I should add an update (for anyone else getting one of these). Moving the cables seems to have fixed the random movement issues so it looks like it was bleedover between the cables (or a lose cable that is now fixed by moving it). I have managed several prints without an issue. I have replaced the z-axis threaded rods as the originals were bent and binding half way up (meaning only half

by plastic_splodge - General

Re: Cheap 3D printer - 9 years ago

Thanks for the reply, some good things to consider there (I never new about the 12v jumper). I've moved some cables etc round as I think interference might be the issue. The instructions don't show routing information for the cables so I routed them as neat as possible (ignoring bleed over). The power and LCD cables were routed together (as well as some other cables in other areas). I have mo

by plastic_splodge - General

Re: Cheap 3D printer - 9 years ago

Still got random offset issues. I tried printing the fan duct for the third time. The first one is a bit small, the second one had a blockage part way though and missed a few layers and then this one had the random feed issue. Part way though the bed moved to full forward (away from the stop switch) and back again once it detected issues with the steppers jumping. This left it offset so the rest

by plastic_splodge - General

Re: Cheap 3D printer - 9 years ago

I found one of his videos already but going through the rest now. There are quite a few on there on this type of model, I guess the seller of these watches them as the firmware he upgraded to in the video appears to be the same as in mine (as it came). I like the bed mods he did (I will probably do them on mine eventually as well). So far I have managed a few parts (when I've had time to play

by plastic_splodge - General

Re: Cheap 3D printer - 9 years ago

Interesting observation, I noticed that difference as well. Later on (once I'm past the get it working smoothly stage) I was going to ask if that was a better setup and a possibly improvement (less change of going out of balance I'm guessing I did notice an interesting thing happen. I turned on the desk lamp to check how the print was going (one of those halogen thingies) and the printing stoppe

by plastic_splodge - General

Re: Cheap 3D printer - 9 years ago

Just a quick update to say that printing direct from Repetier for a couple of hours now (9 hours estimate for yoda head, I think I may have to look at the settings or is that about right :O) and so far no random movements. So it looks like it doesn't like printing from the SD card. On another note I am gradually turning down the nozzle and bed temps during the print. It seems that 190 was a bit

by plastic_splodge - General

Re: Cheap 3D printer - 9 years ago

I thought that as well, until I realised the printer did unusual things at the same time (kind of rules out printer to serial connection issues) I can try downgrading the speed to see but I'm not completely sure how to do that, does that need flashing of the firmware?

by plastic_splodge - General

Re: Cheap 3D printer - 9 years ago

I tried a print using slic3r . I took the yoda head and set up the best parameters I could guess for the printer. While printing from SD card I had the log running and once again saw the bed run off to the edge. The log shows some weird stuff so I think something isn't right somewhere. The first error (84 E24.78460) I found in the gcode in only one place and that looks good. So it seems the g

by plastic_splodge - General

Re: Cheap 3D printer - 9 years ago

Thanks, I'll try those settings and give SLIC3R a go to see how that prints. I just tried the extrude 100mm in Repetier and got a bit pile of PLA lol. I have no idea if this is a setting in Repetier or the firmware, but given the cube I produced from cura was ok I think it must be in Repetier. Still trying to work out which printer to select so that was probably the issue. Using prusia i3 does

by plastic_splodge - General

Re: Cheap 3D printer - 9 years ago

No problem. You can see what it is happening in the first link (I video'd what it was doing). I tried printrun and played around with moving the axis. If I try to move it manually the z axis stops at 100mm and the x/y axis will go to the limits of travel without stopping. I assume this means the firmware needs some changes in it as the soft stops are set wrong. Now I just have to figure out how

by plastic_splodge - General

Re: Cheap 3D printer - 9 years ago

Thanks, the Prusa i3 is good to know. I guess the firmware in it is what I need to find out next (so I can select the correct printer name). I don't think it is skipping steps. At 15 minutes into the print in the video it suddenly went full right on the machine but that side doesn't have a stop switch. This meant it run out of space and either the belt or servo skipped. When it moved back in to

by plastic_splodge - General

Cheap 3D printer - 9 years ago

Hello, I've scavenged enough info off here in the last week I thought I should at least put a post up. Having a background in engineering and now computers (and having been trained to use one of the early CNC's lathes 30 years ago) I decided I liked the idea of 3D printing as it might be useful and fun to play with. So I brought the cheapest one I could find (until I know it is for me), one o

by plastic_splodge - General