Awesome work! How much larger is this compared to the factory 2+ head? I assume the intent is to make an easier to swap nozzle that is better designed?
Awesome work! How much larger is this compared to the factory 2+ head? I assume the intent is to make an easier to swap nozzle that is better designed?
I'll try to keep as much of the build size as possible, for now it looks like I might loose a bit in X and gain a bit in Z.
My main intent is to be able to get the CORE quality in terms of usable temperature range to the UM2, but the easy swapping is ofc also nice. Be aware it comes with a cost, pricewise nothing beats changing a nozzle on an olsonblock.
- 1
Just ordered the connector at Amazon.de, as farnell doesn't seem to ship to the Netherlands.
>>manufacturer link;
http://www.avx.com/products/connectors/specialty/standard-2-5mm-pitch-battery-9155-000/
>>3D file; select the 5 connector type, and the 2.3mm contact height
Edited by Guest
Awesome work! How much larger is this compared to the factory 2+ head? I assume the intent is to make an easier to swap nozzle that is better designed?
I'll try to keep as much of the build size as possible, for now it looks like I might loose a bit in X and gain a bit in Z.
My main intent is to be able to get the CORE quality in terms of usable temperature range to the UM2, but the easy swapping is ofc also nice. Be aware it comes with a cost, pricewise nothing beats changing a nozzle on an olsonblock.
Any thoughts on implementing a flex drive with it?
No, I have no plans for that...
Just ordered the connector at Amazon.de
Thanks for the hint!
Edited by Guest- 1
Great idea, will follow this thread!
- 2 weeks later...
slow but steady progress, time to start printing again....
bearings will be pressfit, there's space for (a stack off) magnets to hold the top tube of the core firmly in place. I use 10*5*4 block magnets. I left some space at the right side to use a mini screwdriver to "unlock" the tube from the magnets.
The fan-mount design is borrowed from @labern as it's my favorite design.
Edited by Guest- 3
No metal to hold the core, just the magnets? The um3 uses a 60 degrees (aprox?) chamfer that makes a tight fit when each core is in use. I wonder if is part of the cooling calculations.
No metal to hold the core, just the magnets?
Yep, and a sort of tight fit in the plastic..... we'll see, just a first attempt... if I find the time we'll know more next weekend.
I wonder if is part of the cooling calculations
I wonder too, I'll place a temp sensor inside the setup when I do the first tests..
SyntaxTerror 344
For future reference the connectors can be ordered from Mouser -
P/N: 581-009155005003016
Haven't heard of a place they don't ship to yet.
ordered those at ebay... damn long to wait until the parts arrive from far east.... :-(
will see what arrives first - connectors or core :-)
b.t.w.: does anybody know what is affected when changing an UMO from 19V to 24V supply ?
Of course the LM7812 has to be changed... but in terms of PID/Steppers/FW..?
- 2 weeks later...
Wow..... Way to go!!!
Great creation!
Torgeir.
Phantastic job! How is the print quality?
And what is this extremely cool Calimero version of the ultimaker :-)
Whow, great work!
Got my pin connectors last friday, still in progress of designing.
Aim: dual head for UMO @ 24V :-)
B.t.w. - as my core hasnt arrived yet, could you please assist with a short measurement? on which hight e.g. measured from the nozzle position is the connector mounted?
I can make it even easier... I'll upload the design files of the head... but it will have to wait till tomorrow.
EDIT; if you want to have a go at it and want to use my files for measurement just send me a PM, I'll wait a bit with publishing as its far from finished
Edited by GuestUpdate;
The bad: print quality is poor
The good: I'm pretty sure how to solve it.
In the current design the CORE is fixed in 2 ways. The plastic is more or less fixed in the head, and the top shaft is fixed by magnets. This means there's too much play at the nozzle, as the real fixation is only at the top shaft. To solve it the metal part of the core needs to be fixed in the bottom plate of the head, just like it's solved in the ultimaker3.
It means it's a bit more complicated as a 7mm thick metal bottom plate is needed (or something like PEEK, but that's much more difficult to get)
Stuff I plan to do;
- check how hot such a bottom plate will get (try a quick draft in aluminium) and check if it needs cooling, and/or try to measure the temperature of the plate in the Ultimaker3.
- option 1, simple CNC'ed aluminium plate (preferred)
- option 2, have it printed in metal if cooling ribs are needed.
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drayson 75
Great work - love this idea!!
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