E3D Hot end?

[Richard Perry]

Hey folks -

I'm looking to upgrade my MendelMax 1.5 (or is it +? It's the MTW version with the car/carriage Y axis, not the older one on rods) to a higher-temp E3D hot end. Specifically, I'm looking at this kit:

https://www.matterhackers.com/store/l/e3d-all-metal-v6-hotend-full-kit-1.75mm-universal-bowden-24v/sk/M46C9RXD

(the 24V version is because that's the voltage my bed is at already).

Obviously, I'll have to figure out mounting/carriage/feeding issues. I'm considering moving the extruder to the top of the gantry and using a Bowden tube - that tech seems pretty bullet proof these days and would help with any possible overheating issues related to higher temps.

Mainly, I'm checking here to see:

1) If there's anyone left here :)

and

2) If anyone else has done this before or can suggest printed parts already designed to use.

My Mendelmax is working fine on PLA - I'd just like to use it for higher temp materials, and this seems to be a reasonably efficient way to upgrade.

Thanks (in advance) - 

Richard Perry

[Randy Schack]

Here's a link to a youtube video of my MendelMax after conversion to a Titan Aero mounted to a makerslide (I think) X axis. Not exactly what you describe but in the same vein.

I can take some pics of the conversion if you'd like.

Randy
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[Randy Schack]

I forgot that I had put together a short article on making the bracket to adapt the Aero to the makerslide. Here's a link to that.

There is a PDF with dimensions on the page.

Randy

[Mike Payson]

Hi Richard,

Can you post a pic of your X Carriage? I's been so long since I dealt with the 1.5 that I don't recall specifically how the hot end mounted.  In general I don't recommend using a Bowden's extruder. They do work, but they make certain types of prints and materials more complicated, so I prefer to stick with a direct drive extruder.

Mike

On Tue, May 22, 2018 at 11:16 AM, Richard Perry <per...@gmail.com> wrote:

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[Larry Knopp]

I'll second Mike on the Bowden.

It's being done, successfully, on some bots but I've tested a crap-ton of variations on a few different MM 1. bots and have returned them all to direct drive.

The E3Ds are solid.

And it's a pretty simple process of designing up a mount for it.  Grab the E3D dimension drawing and hack away!  (honestly, any design suitable for a JHead will be extremely close to what you need for E3D)

[Richard Perry]

Mike - sorry, I caught this at work and don't have access to my shop at the moment, but the x-axis on mine uses two 8mm drill-rod sliders mounted horizontally and linear bearings. Here's a decent look at it:

https://www.thingiverse.com/thing:20355/#files

The X-carriage (you know, terminology on this stuff is harder than I thought!) is this one:

https://www.thingiverse.com/thing:16397

....except I'm pretty sure I replaced the bronze bushings with linear bearings somewhere along the line. LM8UU's ring a bell.

Current hotend is a Budaschnozzle - 1.2 or 1.3, I think.

That help?

Thanks!

Richard

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Regards -

 

Richard T Perry

per...@gmail.com

[Richard Perry]

Thanks, Randy! Good stuff to ponder there.

Richard

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[Richard Perry]

Interesting. My other printer (a A3S from China) uses one (it's ok, but I will admit that the regulation/flowrate of material seems better on the MendelMax), and my impression was that commercial offerings were heading that way, but Lord knows I haven't been able to figure out what's "cool" since parachute pants.

FYI, my reasoning was that removing the extruder from the "tool head" would work better with higher (240C-260C nylon etc ) temperatures, but hey, that's the beauty of having a home-built - I can experiment with stuff like this. Ok, I'll stay with the direct drive, then.

Oh, and thank you all for being still "out there" for this admittedly vintage unit.

Richard

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[Randy Schack]

I'm in agreement with the others regarding the Bowden setups. I have a delta printer with a Bowden configuration and unless you really need to reduce the moving mass (and you'll never get rid of any where near the mass inherent in a cartesian printer with it's moving bed!) they are simply another place for things to go wrong. The Titan Aero does a lot of things right.

Randy

[Charles Steinkuehler]

I've got a similar vintage MendelMax. I switched to the "Supa Flat X
Carriage with opposing Fan Mount":

https://www.thingiverse.com/thing:39257

...with the rear-mounted cooling fan duct (thing:29985), and I'm still
using the bronze bushings. I use Jonaskuehling's Greg's Wade reloaded
extruder, which can be setup to work with just about any hot-end:

https://www.thingiverse.com/thing:18379

...but that was from 2012. There's probably even nicer versions of
Greg's Wade floating around these days.

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Charles Steinkuehler
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[Larry Knopp]

All of the above.

;)

My personal redesign of the Greg's Wade is *at least* 5 or 6 years old.  (I don't believe I ever uploaded to thingiverse, it's not really much different than JonasKuehling's other than a couple minor tweaks)

I will say one thing for sure... upgrade to https://www.thingiverse.com/thing:818003 (or similar).

And, this : https://www.thingiverse.com/thing:961630

Is a very good complete remix of the Wade's

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[Andrew Mauldin]

Hi Richard,

I've been upgrading my MM1.5 over the last several years. The route I took was to redesign the x-ends using the prusa i3 mk2 as the basis.
Since the prusa is open I used their scad parts to start with and modified it in openscad. Installing the x-ends changed the horizontal rods to being vertical and also let me use 8mm lead screws instead of the threaded rod.

After that, I was able to use just about any standard i3 compatible parts so I tried a few. I have settled on the Toranado ( https://www.thingiverse.com/thing:1246951 ). I use the side/flush mounted one with the BL touch. Love that thing.

I'm on vacation right now so I don't think I have access to the scad files for the x-ends, but I do have the stl files. If your interested, I'll post them.

Thanks,
Andrew

[Richard Perry]

Just as a followup for anyone interested (I was!) the E3D hot ends are documented pretty well here:

https://e3d-online.dozuki.com/ 

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