Upgrading an UM2 with an UM2+ feeder?

[reibuehl 42]

Hi all,

 

I am planing to upgrade my UM2 with the geared feeder from the UM2+. As my UM2 already has the UM2+ hotend, I would like to avoid the high cost of the full UM2 Extrusion Upgrade Kit. If I understand it correctly, the new geared feeder requires a reverse direction of rotation. Is there a reason not to do this reversing just in the firmware (I use Tinkergnomes Firmware) and keep the UM2 feeder motor?

 

Reiner

[ahoeben 1,986]

24 minutes ago, reibuehl said:

Is there a reason not to do this reversing just in the firmware

It is done in the firmware. Because there is an added gear in the extruder, clockwise becomes anti-clockwise. The firmware instructs the motor to rotate in the other direction.

 

As far as I remember, the reason to include a new stepper for the extruder was because how the gear attached to the motor shaft (and the length of the motor shaft).

[ahoeben 1,986]

You could get the Bondtech extruder instead:

https://www.bondtech.se/product/bondtech-ddg-v2-extruder/

[reibuehl 42]

6 minutes ago, ahoeben said:

As far as I remember, the reason to include a new stepper for the extruder was because how the gear attached to the motor shaft (and the length of the motor shaft).

Okay, so I would need a new motor anyways?

 

I checked the Bondtech extruder and that one also states UM2+ as a requirement so it also might need the longer motor shaft?

[ahoeben 1,986]

1 minute ago, reibuehl said:

so I would need a new motor anyways?

Like I said, because of the motor shaft (length and/or shape).

 

2 minutes ago, reibuehl said:

Bondtech extruder and that one also states UM2+ as a requirement

Hmm, strange. I would contact them and ask. An Ultimaker 2 with an upgraded extruder and hotend, for all intents and purposes, is an Ultimaker 2+. I am pretty sure many Ultimaker 2 users that already had an Ollson Block upgraded with a Bondtech extruder.

[reibuehl 42]

Okay, I will check with them.