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Re: Compiling RepRapFirmware on Linux without Eclipse - 7 years ago

Quotedc42 The reason why we use IDEs is that RepRapFirmware is no longer a simple project. There is no way I would be without some of the features found in all modern IDEs (except Arduino, which doesn't deserve to be called an IDE IMO), in particular the "Go to definition" and "Find all references" features. exuberant-ctags and vim (or emacs - not a fan but i know people are) have exactly those

by lkcl - Ormerod

Re: Foldable, portable CoreXY (Fusebox derivative) - 7 years ago

ok this is interesting, note on the right edge, where the printer's going in an arc, that's fine. on the corner: fine. but in the middle, where it's speeding up, that's where zagging occurs. soooo..... from this we can conclude that i'm either running it too fast or that there is lag on the extruder. i'll try backing it down to 250mm/sec speed, see if that helps.

by lkcl - CoreXY Machines

Re: FuseBox ~$300 CoreXY Printer - 7 years ago

Quotelkcl Quotephord I was hoping your redesign would include a useful extruder for 3mm ok i've _had_ to replace the metal arm with a printed one so that's now in the repository. testing it now. still didn't fix the problem i was having difficulties with skipping at a very specific angle - at least now it's a PLA part. what _has_ solved the skipping is splitting the extruder gear into two pa

by lkcl - CoreXY Machines

Re: Foldable, portable CoreXY (Fusebox derivative) - 7 years ago

woooow. 28mm3/s at 350mm/s print speed. that's with the new 0.4mm nozzle, 1/4 micro-stepping, a 3.54:1 (46:13) geared extruder i had to make and 2.85mm filament. temperature is 230C (for PLA!). results came out like this: i've not taken the gear off the printbed yet. layer height is 0.2mm. the inner attachment on the left is at 0.15mm, the one on the right is at 0.2. i was getting fed

by lkcl - CoreXY Machines

Re: Foldable, portable CoreXY (Fusebox derivative) - 7 years ago

QuoteFA-MAS That's looking from the top down when it's in deployed setup? yehh it iiis, that's the timing belts on the right edge. i'll deal with this one later, i'm still arseing about with a 3mm geared extruder, have to have gears because 3mm PLA needs 3x the pressure: direct-drive doesn't cut it.

by lkcl - CoreXY Machines

Re: FuseBox ~$300 CoreXY Printer - 7 years ago

Quotephord I was hoping your redesign would include a useful extruder for 3mm ok i've _had_ to replace the metal arm with a printed one so that's now in the repository. testing it now.

by lkcl - CoreXY Machines

Re: Foldable, portable CoreXY (Fusebox derivative) - 7 years ago

ok, so it's all assembled... and we have one of those "argh" moments when you realise there was a lapse in concentration during the design phase of the corexy-to-boxframe attachments. the top CoreXY is now rock solid (so it's not such a big concern) but i'm not happy with myself at the mistake. basically you can see what the mistake is: i put a light underneath and have circled in purple where

by lkcl - CoreXY Machines

Re: Compiling RepRapFirmware on Linux without Eclipse - 7 years ago

Quotejstck Again, thanks for making this. I have very little patience for cranky IDE's and compilers, and this gets me right by the whole thing. i bought one of these boards because i like the idea of having a faster ARM Cortex (i normally use STM32Fs with libopencm3, and love the combination). i also liked the description of the RepRapFirmware being c++-based, it sounded extremely well-designe

by lkcl - Ormerod

Re: FuseBox ~$300 CoreXY Printer - 7 years ago

QuoteAx Quotelkcl QuoteAX Schlotzz's extruder works really well, it's what I run on the FB2020 combined with an E3D HobbGoblin drive gear. i assume? That's the one, was bought by accident, was left in the basket pricing things up along with a spare Lite6, so I thought I'd use it xD Quote I use 1.75mm as it's what the rest of my printers use, it doesn't really make sense for me to use 3mm

by lkcl - CoreXY Machines

Re: Foldable, portable CoreXY (Fusebox derivative) - 7 years ago

QuoteFA-MAS Sounds like is coming along. Pretty good for a first print. The bridge came out good. While the corner cubes sound like they'd help, It's been proven they reduce rigidity over connecting the extrusions directly to each other, but rather add extra parts (however insignificant). Connecting them directly like this would be more rigid Dentist's Post on connecting Extrusion. and requir

by lkcl - CoreXY Machines

Re: FuseBox ~$300 CoreXY Printer - 7 years ago

Quotephord @lkcl Thanks! That works. Also explains why the folder looked empty on the web interface. yep Quote I'm interested in your extruder you ended up with because I'm also using 3mm filament. You're right that the simple FuseBox extruder doesn't work for it at all. :-( nope. it's designed for a MK8 drive gear, and the arm has a hole only for a 1.75mm filament (easily fixed with a 3

by lkcl - CoreXY Machines

Re: Foldable, portable CoreXY (Fusebox derivative) - 7 years ago

Quotepen25 looks good. congrats on getting this to work. thanks! Quote how well does it maintain print calibration when you fold it move it and set it back up to print? haha i haven't got that far yet i just had to take the box apart and the z-assembly today, to fit new attachments. i fixed two issues: first, the wing nuts kept jamming against plastic and metal, so i've turned them round an

by lkcl - CoreXY Machines

Re: FuseBox ~$300 CoreXY Printer - 7 years ago

phord, quick reply, that's git clone git clone \~lkcl//foldable3dsandwich200/.git - sorry! more later

by lkcl - CoreXY Machines

Re: FuseBox ~$300 CoreXY Printer - 7 years ago

Quotepen25 i have updated my BOM to include a few more things i have purchased. I am still under 400 USD but when i order some corner brackets i will be under 425. this isnt including a raspberry pi 3 for octoprint as it isnt needed. and i am thinking the L and t brackets can be left off as right now i am not seeing them doing much ahh that's a mistake. like, a really serious one. those misu

by lkcl - CoreXY Machines

Re: Foldable, portable CoreXY (Fusebox derivative) - 7 years ago

sorry FA-MAS, didn't notice your message, would have replied earlier QuoteFA-MAS Sounds like you're close to getting it running. I'd like to see its first prints. that's running at 200mm/sec with a 0.3mm nozzle (first one i've had - i can say now i really don't like them, i'm swapping out for a 0.4). you can see it's really nice at the top where cura slows down to get 5 seconds per layer, a

by lkcl - CoreXY Machines

Re: Foldable, portable CoreXY (Fusebox derivative) - 7 years ago

hi edvardas, ok so this is no worse than what i get on the mendel90 - these parts are only 2mm thick, but 230mm long and 10mm high. the print speed calculated by cura for the 300mm/sec x-y travel speed says 13.5mm3/sec. the opposite side is, ironically (being the inner of the part), much better. i think i have quite a lot more experimenting to do, neh

by lkcl - CoreXY Machines

Re: Foldable, portable CoreXY (Fusebox derivative) - 7 years ago

QuoteEdvardas Do you notice any under-extrusion while accelerating or over-extrusion on deceleration? I have noticed that this is a problem if I come close to extruding 10mm3 of plastic per second (which is widely considered the maximum). And with my 0.6mm nozzle and 0.3mm layer height that is already a very low 50mm/s maximum printing speed. Moving at 30mm/s gives great results and that is 6mm

by lkcl - CoreXY Machines

Re: Foldable, portable CoreXY (Fusebox derivative) - 7 years ago

QuoteEdvardas What do you mean by an "extrusion rate of 200mm/s"? hmmm, wrong units! it should be 200mm/min - thanks for noticing, edvardas, i'll edit that. i'm thinking ahead for revision 2, i might get one of the micron cobra hot-ends, they have a special "high flow-rate" kit, and the guy i spoke to there is regularly using his extruder at 250mm/sec which is pretty awesome.

by lkcl - CoreXY Machines

Re: CoreXY sensitive to belt tension? - 7 years ago

Quotebani i am looking at designs here and on openbuilds. virtually 100% of them are bowden by design. it looks like the only ones using direct drive are from people who got frustrated with the original bowden design and converted to direct drive afterwards. i have a mendel90: i really, really like it, and i even didn't notice how loud it was until i did the first prints on the Sandwich200. a

by lkcl - CoreXY Machines

Re: CoreXY sensitive to belt tension? - 7 years ago

Quotebani it's claimed here that corexy is sensitive to belt tension compared to other designs. anyone found this to be the case? what i found is that not having equal tension on both belts resulted in torquing the x-assembly . not correcting that would result in, obviously, all square shapes ending up as trapeziums! apart from the damage that it would do to the linear bearings to have the

by lkcl - CoreXY Machines

First print on the Sandwich200 - 7 years ago

it's working! still a work-in-progress but it is basically working and producing useable quality prints. i am currently testing 300mm/sec - there is a little bit of zagging (diagonal breaks on outer shells) - and in stand-alone tests i managed to get an extrusion rate of 200mm/min without skipping. to get that ridiculously-high extrusion rate i had to: reduce micro-stepping to 1/4 increase

by lkcl - CoreXY Machines

Re: Foldable, portable CoreXY (Fusebox derivative) - 7 years ago

ok nearly completed: i found that i need to redesign the extruder as it is jamming. everything else is working, despite having to jury-rig a pair of voltage divider circuits to replace the faulty ones on the Rambo v1.2g. the extruder uses 3mm PLA because i have over 400 metres of PLA still which needs using up, from the mendel90 which this printer is replacing. hence, i have had to redesign it

by lkcl - CoreXY Machines