Haha fantastic. Please keep us updated as work progresses. What’s the plan for checking on the first few layers as a print starts? Camera array or step ladder?by TheHandsomeDog - CoreXY Machines
Depending upon which side one views that rocket, it either came out very well or is a disaster! I do however think I know what the problem is. I think I was a little over zealous with the retraction settings. As it printed I could see the start of each layer under extruding. Showing promise thou. Especially as this is my first ever "successful" print. I'm sure once the enclosure is completed itby TheHandsomeDog - CoreXY Machines
Well I may be skipping a few steps but here is the latest pics About 90% done just need to add the back, top, doors and controller enclosure. All of which should have been done this weekend but. With everything connected I just had to have a play. I would love to say I just turned it on and started printing but that would be a very large lie. Ended up having to swap some of the TMC 2208 driverby TheHandsomeDog - CoreXY Machines
The completed assembly with the heatsink mounted Back view showing the slots for the belt mountingby TheHandsomeDog - CoreXY Machines
Today work. The X assembly The cunning fixture to hold the T shaped rail I also used the cut out to accurately measure the 410mm. A well used builders tape doesn't really get that close. I cut the pocket and the trimmed the aluminium until it fitted with a slight press. The result was so good I didn't use any clamps while drilling the holes.by TheHandsomeDog - CoreXY Machines
Progress The 2020 has arrived along with the linear rails, rods and lead screws. I didnt get home until late tonight but as we just had a long week end thanks to the snow I have been able to make a lot of the plates. Still waiting for belts and pulleys to arrive so the critical xy plates are still to be done. I actually made the plates before the delivery so was a little concerned that thing mby TheHandsomeDog - CoreXY Machines
I do understand what the belt paths and where the critical parallelism needs to be (I think) but I have seen machines with the same pulley layout as your sketch but with stacked belts. This is unnecessary as I see it, just want to be sureby TheHandsomeDog - CoreXY Machines
Unless I’m not understanding the problem correctly, would flipping the core xy upside down so having a moving x y build platform and an extruder matrix lifting away from the print on z (think VMC but with print heads instead of a spindle) be the answer? If each extruder had named work offset it would be trivial to integrate into slicing software. Limiting factor would be moving the beds weightby TheHandsomeDog - CoreXY Machines
I have no intention of crossing belts, just wondered why some stacked belt machines have dual axle pulleys that are offset as in the above pic. My design dictates the need For two seperate axles and I just wanted to check that I don’t need to offset them even thou they are in different planes Thank you for all your helpby TheHandsomeDog - CoreXY Machines
mr dentist I do hope you dont mind me keep asking questions that I'm sue have been answered before but I'm going to carry on regardless as you seem to have a good grasp on this 3d printing thing!!!!!! poking around here and google images, I see quite a few instances where the belts cross at the front of machine ie this is despite having the belts at different levels. is there a reason for thby TheHandsomeDog - CoreXY Machines
Perfect thank you. Do you use part cooling for abs when bridging? I was thinking I won’t even install a cooling fan for the printby TheHandsomeDog - CoreXY Machines
Ok i have a question... Heated enclosure. I’m going to board in the sides and top of this printer. As a carpenter by trade I have plenty of ply at my disposal, I know it’s not the best but I’m pretty sure that acrilic won’t hold up to well either. I can get my hands on some thin PIR rigid insulation to fill the 2020 frame to protect the ply a little. At this point I’m not planning on adding anyby TheHandsomeDog - CoreXY Machines
Thank you for you reply. you put too little value in your opinion. it is great to hear that klipper is a working solution with an active community as I have sort of committed to using it now! Once everything starts to arrive and construction begins I will post as much as I can, I already received the aluminium plates and profiles from the uk supplier but I do not want to start cutting anything uby TheHandsomeDog - CoreXY Machines
Thanks for the link @mksa I read it in its entirety, it’s been a slow day. Whilst interesting I did not find any thing of any relevance to any of th I have posed. Is this the right link? The digital dentist has set me on the right path regarding my bed plate and piper3d has me well and truely sold on the 3 motor z. It is something I had always planned to do long term I just couldn’t justify theby TheHandsomeDog - CoreXY Machines
Quotecozmicray All you need here is a calliope and a ring master? haha made me spill my coffee!!! in the klipper firmware it is possible to map any pin to any function so the extra two z motors would be configured to the e1 e2 drivers All the hard work is done by the pi leaving the chip on the F6 very little to do other than send the command at the right time. I thought octoprint was held inby TheHandsomeDog - CoreXY Machines
ok so now thanks to piper3d I am onto revision 5 of the printer, I think there is going to be a few left over parts as parts for the mk4 are already on route!!! the Klipper software looks awesome why is it not more prevalent am I missing something? the ability to just add a second, third, forth.... control board pretty much gives an unlimited number of connection / upgrade options. I have foundby TheHandsomeDog - CoreXY Machines
@piper3d Klipper looks like the solution. Thank you very much this is exactly what I have been looking for.by TheHandsomeDog - CoreXY Machines
Wow thank you. This is exactly the constructive input I was hoping for when I first posted. Your absolutely right there is no register in my magnet solution. If I had a lot more free time I would set up and test the repeatability of the magnets. accuracy in alignment during the initial fixing to make sure the mags stack exactly would be very important but not impossible. I had assumed that the mby TheHandsomeDog - CoreXY Machines
@the_digital_dentist Thank you for the detailed response I see exactly what you mean about the slot sizing. For some reason I had a much larger number in my for the amount of expansion. Don’t laugh but it thought it would be double that! As my z motion already has the 3 point levelling ability with the lead screws I will not need the bed mounts to accommodate any adjustment vertically. I know itby TheHandsomeDog - CoreXY Machines
That kinematic mount is interesting. Do you find that as the bed expands it creeps up the inclined surface of the countersink? I’m guessing it would be negligible accross the distance to the next nearest mount. My current solution is a little less elegant. As I will already have the ability to adjust the bed plane with the lead screws I was thinking of using neo magnets to hold the bed in place,by TheHandsomeDog - CoreXY Machines
Quotecozmicray "linear rails run in pairs are hard enough to keep perfectly parallel and true to each other adding a third would add another level of complexity which I'm not sure I would have the patience for." One linear rail would replace your dual rod guide .... so only three rails 2 rods parallel --- parallel to two other 2 rod assemblies ---- I see six vectors going every witch wayby TheHandsomeDog - CoreXY Machines
Well I have. made a couple of tweaks here and there and have ordered the parts I need plus a few extras as I am not 100% no the idler tilt remedy. I went out to the garage and made up a dummy idler rig using bits and pieces. I am very confident that the low level ideas mounted 1mm off the support structure will not flex under the loads that they will see. I'm 70% sure the tall ones will be fine tby TheHandsomeDog - CoreXY Machines
Iim glad you mentioned the self aligning bearings, I had been wondering about using them already. Definitely will now. I left the top of the lead screw unfixed to make sure there are no binding issues, the pillow blocks will allow that freedom without flexing the rods to get it. I just couldn’t decide if it was overkill or not. I will be running a duet 3D so stepping won’t be an issue and the leaby TheHandsomeDog - CoreXY Machines
cozmicray I have no idea the pic format they are raw straight from fusions render engine, I foolishly assumed they would be jpeg. the space above is to give room for the Bowden tube when I put a lid on it linear rails run in pairs are hard enough to keep perfectly parallel and true to each other adding a third would add another level of complexity which I'm not sure I would have the patience foby TheHandsomeDog - CoreXY Machines
do you think I should add bed levelling screws between the aluminium plate and the U frame? I had planned on using the 3 lead screws to do the initial levelling as close as possible and then let software do the rest. this way the solid connection of the bed plate to the bed rails will create a very rigid platform to print onto. I would have to use a plastic washer between the bed and rails to givby TheHandsomeDog - CoreXY Machines
Thank you for your responce QuoteFA-MAS I would stack the x-y belts and run them inside the linear rails so you could do away with those extra idlers. You're also going to want to support the idlers on top and bottom. They're going to want to tilt as you tension the belts. how will stacking the idlers prevent tilt? surely 2 belts on the same post will add to it? or will I need to add top supby TheHandsomeDog - CoreXY Machines
Hi first post so please be gentle... I would really appreciate a moment of time from some of the more experienced users in this community I will try and keep this as short as possible but here goes At the start of the holidays I decided that it is time for a 3d printer. a quick search and discovered they are a lot cheaper than the last time I looked this time last year. another quick search anby TheHandsomeDog - CoreXY Machines