How to prepare the slicer and models?

I use this video as a guide for the settings on CuraSlicer, and use a free online jpg to svg converter, then another svg to stl converter to get my final 'image' for CuraSlicer. Once the stl is imported, I resize it to fit it on the print volume, then set the model height to something around 0.015mm. If done correctly you will be able to slice the model and get an estimate for the time taken, and if done incorrectly the time taken estimate will be 0m0s. Refer back to the video in this case.

Description

This is a conversion for the Ender 3 and similar Creality 3D printers that use the same style of hotend (e.g. the CR-10). It replaces the hotend and uses the same screws to bolt it onto the printer. It also has the same cross-sectional profile so the original fan cover can be reinstalled after installation if you wish, though the fans will serve no purpose. 

You must select the design you want to print, and make a copy of it so that there are two of them. This doesn't work otherwise, as it will sandwich together to enclose the pen refills and pen spring. This can be done in Bambu Studio, or the Bambu Handy app.

Parker-style pen refill is required to use this

It uses a parker-style pen refill and a pen spring on top to hold it against the paper when drawing, and to mitigate damage due to an uneven bed. There are several models available to accommodate different spring lengths, but a standard 4mm pen spring will work.

Additional models for tighter fit

There is an option to use the models that have two extra screw holes to ensure a tight fit, but these will require two M3x12 screws listed in the additional hardware section. I do not use this model and it works brilliantly with just the standard model.