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Prusa i3 Mk 3

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GreatOldOne

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#1
Has arrived after a slow jaunt through continental Europe. Let the fun commence! :cool:
A6646D20-9E1E-418B-B12B-6B7095F59218.jpeg
FA7B5D75-5B80-4CA9-B5F5-C97BD693D778.jpeg
 

brino

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#2
Congratulations!

Are you going to document the assembly?
Even just a short write-up about how easily (or not) it goes together, and some info about your first prints would be very useful.

Thanks,
-brino
 

brav65

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#3
Congratulations! I just bought the TEVO Tornado, it arrives tomorrow, looking forward to see what your experience is.
 

RVJimD

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#4
I had a mk3 kit ordered back in March but got frustrated with the delays and cancelled that and now I have two monoprice printers. One select plus and one mini! I have really been using both and I love to see a fusion 360 design come to life on the printer! Jim
 

GreatOldOne

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#5
Pics from tonight’s assembly session.

Frame assembled.
8602C44B-AFAA-457A-B3E2-48DEDDA12D9C.jpeg


Y-Axis assembled and installed:
AC4D333A-4285-4355-A236-9484839BCB86.jpeg


Then the X-Axis along with the Z-axis lift motors and screws:
F8765AD5-F725-4943-970F-53B6B72406F7.jpeg


The extruder built and attached to the X-Axis. This took the bulk of the build time tonight, as there a lot of parts to put together, and cables to route.
25FD9726-EF37-43AD-BFA2-53B389972A0A.jpeg
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Cable management on the rear of the extruder.
A6BCC265-008C-414A-B1A3-A874683FB3FF.jpeg


So far, the build has been a breeze, apart from some fiddly bits where M3 nuts have to be pressed into some deep holes. And the instruction book is amazing, you get a full colour printed book, and it’s in English, not some facsimile of the language. :)

Here’s the electronic version if you’re intersected.
https://manual.prusa3d.com/c/Original_Prusa_i3_MK3_kit_assembly

Tommorow I’m onto the electronics and power.
 

brino

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#6

GreatOldOne

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#7
LCD and bed attached:
F89CF785-A7DD-4F8B-B2B8-5067E0C411DF.jpeg
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Electronics enclosure and main board
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PSU - where it’s attached allows it to double up as a brace dor the frame:
B0198142-B2EE-4E32-AC25-5449704C0FF3.jpeg


Cable management:
7235B75C-CB54-4A43-86C1-E2FB8D5E7646.jpeg
FED53D47-493F-4237-ADA1-CDCF24E9F772.jpeg


Wiring connected up to the main board.
D8A75376-34EA-46ED-914C-5522353FAF4C.jpeg
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Complete!
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First print.
EA071E03-6554-4848-89F3-0CBD0A4A3BFF.jpeg

00FF0375-6B2B-4199-A871-752DC05C9DA5.jpeg
 

GreatOldOne

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#9
Ok, so I tried to print out a benchy as it’s what all the cool kids do. This is what I got:

C966D797-E1A5-4A3D-9FB2-0F8B61A8246B.jpeg
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Not the best of results! :/

A quick call for help on the Prusa Facebook page, and I got a diagnosis - the belt pulleys where loose. This from several new friends - and - Jo Prusa himself!

After making the suggested tweaks (tighten the grub screws on X&Y axis, check the extruder filament tension, double check the initial layer height), here’s the result - ahoy there mateys!

541DE733-E307-461B-AEBF-B31F04478202.jpeg
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541DE733-E307-461B-AEBF-B31F04478202.jpeg
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I’m blown away by the quality of the print, and the level of support.
 

GreatOldOne

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#10
My first “paying” gig... :p

These are some fasteners I designed for my friend, who in his spare time is the boatman at the local rowing club. He wanted some nuts making up to hold things in the racing boats (I forget what it’s for, but these are the same sort of 4 or 8 man boats you see at the Olympics and the Oxford V Cambridge race on the Thames). The crews have a tendency to do things up too tight, stripping fittings out the fragile boat shells and causing lots of grief and costs to the club. These are can only be done up by hand, and if they try and wail on them the nut will strip out of the plastic before it does any damage to the boat.

I’ve had the fusion 360 files sat on my laptop for ages, as I couldn’t get them to reliably print on my old delta printer. The MK3 romped through them.

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They’re M6 nuts pressed into the bottom, and the text reads “HAND TIGHT ONLY”, just so the crews don’t forget. ;)
 

GreatOldOne

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#11

So yeah, I’m now realising that the build is never over. Tinkering is habit forming, upgrades ahoy! :cool:
 

Dave Paine

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#12
The fasteners look good. So many ways to upgrade a many 3D printers......
 

The_Apprentice

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#14
Been keeping an eye on it myself. But I'll wait a few more months :p
 

GreatOldOne

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#15
I've swapped out my security cams at home, and the base of the old ones where bigger than the new ones. And I didn't feel like filling holes and painting... So from problem to solution, about 2 hours. :D

Modeled in F360:
IMG_4404.JPG


Exported, sliced and printed in black PETG - same dimensions and fixing locations as the old mount:
IMG_5360.JPG


Recess takes a steel plate that came with the camera, fixed with VHB tape:
IMG_4086.JPG


New camera has magnet built into the base, so it sticks to the plate:
IMG_7987.JPG


And in place and on line:
IMG_1538.JPG


Result! :cool:
 

GreatOldOne

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#16
I've now got my printer enclosure built, and the printer relocated up in my study rather than on the dining table.
PrinterEnclosure.jpg
PrinterSpool.jpg
PrinterPSU.jpg
PrinterLights.jpg
PrinterCamera.jpg


3 Ikea LACK tables, some printed parts and some perspex and you get a very handy printing station. :D

First print in the new home:
 

Frank O

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#17
Great work with your MK3. I ordered a kit that arrived in late January, but due to major, unexpected changes to my schedule I didn't get the build completed until this week. Was happy to see that, after a couple of relatively minor tweaks (tightening a belt, adjusting height of the sensor on the extruder) I'm getting clean prints. Now my only issue is that I've managed to forget everything I learned about Fusion 360 over the past few months. So some major resharpening is in order there.
 
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