E3D Tool Changer Modified Part Cooling Duct

thingiverse

The E3D Tool Changer Printer is an advanced Core XY prototype printer featuring numerous innovative designs. It can accommodate up to four separate tools for FDM printing or any other device you wish to attach to the motion platform within its automatically loaded tool heads. Each tool head on this prototype comes equipped with a ducted part cooling fan and is specifically designed to fit fans with extremely thin mounting ears, approximately 1.3mm thick. However, E3D had to switch suppliers for the fans because their original supplier provided models that were not responsive to PWM control. These fans would either be fully on at a duty cycle of 255 or completely off at lower settings. E3D has sourced new fans from WINSINN and they have slightly different dimensions. Unfortunately, these new fans do not fit into the FDM printed part for the V6 Part Cooling Fan as shown in the E3D Github repository for this unit. The mounting ears on these new fans are approximately 2.5mm thick, rendering them incompatible. To resolve this issue, I have taken the original E3D STL file and imported it into OpenScad. Utilizing the "difference" command, I subtracted out the problematic mounting ears and added new sections for a wider mounting slot. I am attaching the original E3D V6 PCF STL file, along with my Openscad design and the resulting modified STL file.