This last weekend I did a pretty substantial mod to my Ender 3 3D Printer. I converted it from its stock Bowden style extrusion to a direct drive setup. The reason I did this was mostly due to me wanting to be able to print in flexible materials easier and quicker. I have been able to do some slight flexible printing on my Ender 3 with the stock setup, but it was less than ideal and often led to under extrusion as well as filament jamming. I was approached by Matthew, the creator of a cheap and simple extruder converter for the ender 3. Once I saw the price I was sold and figured that my viewers would be very interested in seeing this process and how effective it was.
I took the pdf that was sent to convert the Ender and created a step by step installation video. To me, videos have always been a preferred method of learning and a much better visual representation. This video is very step by step which you may not need, but at least you can skip through the video if there are any parts that are unclear or you are uncertain of.
The beautiful thing about this upgrade is that it very inexpensive, does not require any firmware modifications, no soldering, and you will not even need to adjust esteps as you are going to be repurposing the existing extruder. Before I posted the video, I ran a quick Bench print that turned out very well. As I am writing this, I am almost complete with a flexible TPU print that has turned out great. I will definitely update with results after I have tried a few various TPUs.
If you are looking to upgrade your Ender 3 at a very low price point, this is an absolutely fantastic option.
Purchase your extruder upgrade kit HERE.