Renkforce RF100 ReBoot - 161% more buildvolume!

News, 28.03.2020:

I have now added three version of the Extrudermount, the recent one is the one with BMG in the title, and was designed around a BMG clone extruder, but should fit regular BMGs as well.
Also added the missing HEVO-X-Carriage-Adapter (RF100-Adapter), so you can screw the original HEVO-Hotend-Carriage to the RF100. Somehow that got lost.

Happy printing, and stay safe and sound through all this! \o/

TL;DR first:

Welcome to my Overhaul of the Renkforce RF100!

So, i got the hands on a totally totaled RF100 V1. Board dead, PSU dead, Hotend clogged and stuck with tons of PLA, one stepper motor dead, Y-axis bent.

Due to having already built a corexy and rebuilding two ender 2s, i had a lot of spare parts and random stuff, so i put some evenings in, and rebuilt everything.
The target wasnt only a functioning printer, but also the max build volume i could get out of this frame.

What i did is:

• straightened the y-axis
• designed and printed an adapting piece to fit an HEVO-Hotend-Carriage
• converted to a bowdensetup (for this i took an existing design and just redid a few things in tinkercad because i just wanted it to be done)
• designed and printed new X and Z-endstops
• designed, printed, and cut a new Y-carriage to fit the Ender 2 Heatbed out of aluminium (dont do this. Just send the file to a plasmacutting facility and get a perfect carriage, and not the junk i sawed myself)
• put an Bigtreetech SKR v1.3 into this, together with 4 TMC2208
• put an original Ender 2 Heatbed into this (150x150mm)
• designed and printed an extension for the 5015 blower, so it doesnt jam into the frame before the actual hotend-carriage does
• oh, and of course added an 5015 as partcooling into the setup, but that wasnt really difficult, as this was already a part of the hotend-carriage
• threw the internal 12 PSU out, and put an external 12V/30A PSU into the setup to have enough juice to drive both hotend and heatbed at ease
• turned the heatbed-mount 180°, to get a bit more buildvolume
  The original buildvolume of the Renkforce RF100 is 100x100x100, which is 1l.
  The new buildvolume is 127x142x145, which is 2.61l, so 161% more
  buildvolume!

The longer version:

++++++++ Why? ++++++++
I saw the RF100 (v2) at the german Conrad a few times, and found it too expensive for what it did (120x120x120 buildvolume, no heated bed).
But as i found a V1 one (100x100x100 buildvolume), that was more or less declared dead and i thought "i could rebuild this, bigger and better" and so went with it.

++++++++ Why bowden? ++++++++
Well, direct was dead on the rf100 that arrived anyway, i had all the parts laying around for a bowden setup, and i like bowden and use it on the 4 other printers i have...
...so... why not?

++++++++ Why an E3D V6? ++++++++
I like it, all my other printer have one, so... why not?

++++++++ Why a 5015 for part cooling? ++++++++
Because it works. Also, why... ah... you get it now i think.

++++++++ Why a SKR v1.3? ++++++++
Its the future of affordable 3D printing. Its 32Bit. There is literally no reason going 8Bit for anything any more, since the SKR v1.1 is out.
So, why not?

(did i said it again?)

++++++++ What will that all cost me? ++++++++
The printer was 50 bucks in that totalled state, the SKR plus 4 TMC 2208 another 50,
the E3D V6 clone 10 bucks, the 5015 probably 5 bucks, the ender 2 heatbed would probably be 20 bucks, the PSU 25 bucks, the Extruder would probably be 10 bucks...

Lets just say it will cost some moneys.

++++++++ Is the rebuild worth it? ++++++++
What? Hell no!
3D Printing is a hobby, and rebuilding or "reboot"ing (who came up with that idiotic phrase anyway... oh, that was me...) a 3D printer is a money sink.
If you want a bigger printer for cheap, go Ender 3! Or 5! Or... i dont know.

Yeah, i totally copied that sentence over from my Ender 2 rebuild.
Sue me! \o/