Monoprice MP Select Mini E3D Hotend Adapter

Puts an e3d hotend on the famous $200 printer

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So, the hotend on your MP Select Mini 3D printer crapped out? You should have printed one of these out before you pushed your printer too hard.

The Monoprice MP Select Mini is the best 3D printer for the money, with one problem: you can't buy replacement hotends. Hotends are consumables, and eventually the hotend on this $200 printer will break.

Right now, the solution to a broken hotend on this printer is to spend another $200 to buy another printer. That's absurd, and any company that does that will quickly go out of business.

The solution? A 3D printed hotend adapter for the E3D V6. This should be the first thing you print on the MP Select Mini.

The print has been tested, it works. You'll need some M3 nuts and M3 socket head screws (M3 x 20mm or thereabouts).

The stock heater cartridge and thermistor can be reused with the e3d hotend. If you're looking for a 'buyer's guide', here you go:

The total comes to £41.40. I guess the adapter would work with a chinese e3d clone, so if you only have $10, get one of those.

Standard Tesselated Geometry - 624.55 kB - 07/04/2016 at 20:04


scad - 2.47 kB - 07/04/2016 at 20:04


  • 1 × Printed parts STL in project files
  • 4 × M3 nuts
  • 4 × M3x20 socket head screws

  • Hot End Mount

    Benchoff06/11/2016 at 19:35 0 comments

    This should be the first thing you print on the MP Select Mini.

    .STL available in the project files. Four M3 nuts and four M3x20 bolts are required.

    Just print this out and tape it to the back of your machine.


    Because the MP Mini uses a standard thermistor and heater cartridge, you can reuse the stock thermistor and heater cartridge in an e3d hotend. This means a better hotend is a drop-in replacement, without needing any firmware updates or anything.

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Charles.Shay wrote 07/02/2016 at 07:28 point

Saw this video, and now I can control my MP Select Mini remotely thru wifi with Repetier-Host. 

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jay wrote 06/16/2016 at 14:11 point

Is it okay to use PLA for the adapter?

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Benchoff wrote 06/16/2016 at 17:04 point

It should be.

This isn't a perfect design, but it will work well enough to print a *better* hotend mount. 

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AVR wrote 06/14/2016 at 02:54 point

did you do what I did and got a cheap monoprice printer as a bootstrap to a dope coreXY reprap ? lol

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Benchoff wrote 06/14/2016 at 10:34 point

It took a month to print all the parts for a d-bot on a larger and faster machine...

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AVR wrote 06/16/2016 at 21:20 point

word! A whole month though? thats intense.

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impulsecss wrote 06/13/2016 at 05:51 point

sorry, dumb do you propose the fan attaches?

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Benchoff wrote 06/13/2016 at 10:09 point

It clips on to the e3d

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Alex Rich wrote 06/12/2016 at 00:20 point

Does this machine really work?  It's almost too cheap not to buy and try it.

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Robert Gouge wrote 06/13/2016 at 02:13 point

It is my first 3d printer.  After a few days trying to level to bed, it is really a great little machine.  I'm sure it wouldn't have taken a few days to get the bed and setting dialed in if this wasn't my first machine.

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Ted Yapo wrote 06/11/2016 at 11:13 point

One of these printers arrived on my doorstep Tuesday ... perfect timing!

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