Jenny i3 Revamp : Why I'm designing my own X-carriage Show more
The MK8 extruder seems nice, but I've been encountering a few hiccups with it and the i3 1.5 Rework architecture.
I'm designing my own X-carriage to accomodate the mK8 with the Z probe sensor AND a fan that can effectively cool the print, which is absolutely necessary to achieve proper prints.
I couldn't find anything that matched all these criterias to my satisfaction so I started drawing my own from scratch in #FreeCAD
Jenny i3 Revamp : Soldering pins on the RAMPS board Show more
For some obscure reason there were two slots ready for two male pins that weren't already soldered on the RAMPS 1.4 board I had bought years back for Jenny.
The RAMPS board is an all-in-one shield for Arduino Mega boards transforming it into a 3D printer motherboard capable of controlling stepper motors, reading temperature sensors, endstops, etc.
The missing pins I needed were for powering the extruder fan for cooling.
Jenny i3 Revamp : Making up for lost time (2 weeks) Show more
My previous toot on Jenny's revamp is dated 28/02.
In the meantime I've done the following, more or less in this order :
- cable electronics
- discover I'd have to design my own X carriage
- redraw the MK8 extruder and start designing a custom X carriage
- flash the firmware
- connect to a controller and start debugging the firmware
- set the current limit on stepper drivers
- solder missing pins on the electronic board
Well ! I haven't tooted in a while now. A bit over two weeks if I'm not mistaken.
But I'm still here ! A week of vacation followed by an overladen week of work has kept me silent, but my projects (and particularly Jenny's revamp) haven't stopped. I just couldn't manage time to toot about it. I'll be preparing a series of toots to catch up what's happened these past two weeks.
Jenny i3 Revamp : Making some custom length bolts Show more
I had a problem yesterday with my X belt stretcher because I didn't have an M3 50mm bolt, and couldn't get my hands on one in the hardware store.
What I could find, however, was some 3mm threaded rods.
I bought one & cut a 50mm piece. A bit of epoxy glue and a nut and I had what I needed.
Had to reprint the X stretcher though, I had ruined the first one in failed experiments.
Jenny i3 Revamp : Getting to know the MK8 Extruder Show more
The extruder is a part where you can have a bit of fantasy of your own and go different ways.
So I'm forking a bit away from eMotion's Tech i3 since I've had this MK8 I bought off the internet a year or so ago for Jenny's (future) upgrade.
I printed in a lesser quality filament a part I found on thingiverse.com to fasten it to the X Carriage. I had to completely dissassemble it to get it in though.
No better way to get to know it 🙂
Jenny i3 Revamp : Fully assembled Show more
Immediately following my previous toot, Jenny's new frame is now fully assembled and tightened.
The rigidity, as compared to the Mendel i2 frame, is impressive.
At the rear you can see the two added threaded rods making a right triangle to improve rigidity. As previously tooted, directly incorporating a design upgrade.
All the motors are in place as well.
I'll be working on the extruder, heatbed and GT2 belts today.
Jenny i3 Revamp : Fully disassembled Show more
I haven't posted in a few days, I've had a busy friday and a busy week-end but Jenny's revamp has kept a steady pace, everywhere I could fit an hour or two to keep working on her.
Early this week I fully finished disassembling her previous frame which is nothing more than a bunch of printed parts, rods, nuts and washers now.
The cycle of RepRap is complete from birth to death I suppose.
Jenny i3 Revamp : Workbench and Working Conditions... Show more
Couldn't be better. 😁
This is inside the workshop of the fablab at my workplace. Over the past three years I set up this place to make it as it is.
Everything I need is just a hand-grab away I just have to reach to it.
I'm weaving Jenny's revamp inside the hours where the fablab is open under my supervision which explains why the assembly is going along bit by bit.
Jenny i3 Revamp : Further assembly (full bottom frame) Show more
Here's the full bottom frame as it will clip on the mainframe in the upcoming assembly steps.
Last week I tooted about incorporating a design upgrade, that's why one of the threaded rods is longer than the others (360mm vs 210mm).
It's the base on which will rest two more threaded rods forming a straight-angle triangle with the mainframe to improve overall rigidity.
Jenny i3 Revamp : Early frame assembly Show more
Jenny i3 Revamp : Dissassembled Y Show more
I was only missing a few LM8UU bearings which I could salvage either from the Y mount under the heat bed or from the X carriage to begin the i3 assembly.
Either way, I had to remove a lot of stuff just to get to them and I went for the bed so I could get it out of the way for further disassembly later.
Here's the state I left Jenny in tonight.
Jenny i3 Revamp : Goodbye Jenny i2 Show more
I'm going to start dismantling you now Jenny. I need some of your parts to begin the assembly of your next version.
It was real fun and a bit of a pain to build you as you were five years ago.
It's gonna be a blast building you as you will be.
Time to evolve, precious.
We had good times eh ?
Jenny i3 Revamp : Cutting the threaded rods Show more
And I just spent the last hour and a half cutting 10mm thick stainless steel threaded rods with a dremel and you gotta admit, stainless steel is pretty tough.
It gnawed through a few disks as I worked through it but I've got all the rods I need now.
All the supplies I ordered have arrived so tomorrow I'll be dismantling Jenny and beginning the assembly, which is the funnest part ! Yay !🤗
Time to go home and shower now !
Jenny i3 Revamp : The monster that cut the mainframe Show more
This is the I-don't-know-how-many tons monster that laser-cut Jenny's mainframe.
It can cut through 10mm of regular steel and around 8mm of aluminium or stainless steel.
The laser is nitrogen gas based whereas most laser cutters you find in fablabs and makerspaces is carbon dioxyde based and are not designed to cut metal.
Jenny i3 Revamp : The mainframe Show more
Last week I went to a metal workshop just down the street from where I work and asked them if they could laser-cut the mainframe for Jenny in 6mm thick aluminium.
eMotionTech used to sell these frames for around 50€ but seeing as they evolved their own variant of the Mendel i3 (dubbed Metal Motion) they stopped selling it.
Plus, I wanted Jenny's name directly cut into the frame because I thought it could look cool.
Well I think it's awesome 😁
Tech enthusiast. I love open software, open hardware, tinkering, breaking things to pieces and building stuff.
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