New R2 cooling extruder, part design.

Hi all,

I'm starting to think about redesigning a new lower cooling part for the R2. (when I finally get one). I don't want to reinvent the wheel but from all the printers I've had, the small 25mm extruder fan doesn't seem adequate for lower temperature materials.

My idea is to try and squeeze in a 40mm some how, and guide the air through. Failing this, it will be 30mm. Thinking about swapping out the infrared sensor for a pinda too to work with the new spring steel bed. Should be a straightforward swap out. The cooling looks decent, just need to channel it right and not cause thermal errors when it comes on.

It will mean moving things around a little and maybe some firmware changes for offsets etc..

Would appreciate any input and pointers

I'm trying to pick up a second hand R2 at the moment, not many around in the UK.

Thanks,

Steve