I have an Ender 3 Pro, the main difference between the Pro and the non-pro is the use of a magnetic bed and a magnetic sheet that goes over it. The sheet provides good adhesion and so I have never used any of the tips and tricks with tape and hair spray. There are different magentic covers that all look the same from Amazon. Some are too adhesive and I have ended up wrecking two as the models stuck so hard to the sheet, it pulled the cover off.
The difference in 32 bit boards is negligable. The later one is quieter than the earlier one, but unless you are updating the firmware (which isn't that difficult), I wouldn't be too bothered which one to get. I've had both and its made no difference to me.
The key things to remember about the Ender 3 and 3d printing is to get all the axis's at right angles, use a decent steel ruler and a square, and getting the bed levelling correct. As a previous poster has stated, they use a post it note to check the thickness. Heat the bed and the nozzle to the right temperature (you do this as the metal expands), slip a thin piece of paper and adjust the four screws underneath the bed until the paper is just catching on the nozzle. However as you get one part right, it puts the others out of alignment, so you need to go round it a few times. My Ender 3 bed is slightly concave in the middle, (0.1mm?), but thats enough to stop the filament sticking in some cases. This sounds a lot more difficult than it is, and after a few attempts it's second nature.
I do have a BLTouch but the firmware that comes with the Ender 3 Pro (on my version) doesn't support it, so I had to build my own firmware. I build software for a living so this holds no fear, but I could not get the BLTouch V3 to work with Marlin V2.x.x.x. I probably spent six weeks and compiled 50-60 versions and had a lot of discussions with serious developers. We put it down to the version of BLTouch and the version of the motherboard. However other people have stated they got it working first time, so YMMV.
Decent PLA+ is a must. I only buy eSun as I have got that working very well indeed AND it comes in a clear reel so I can actually see how much filament I have left. I have used other filament as well with few problems to be fair. I print at 205C for the nozzle and 45 for the bed and that works for me.
I also use Octoprint on a raspberry pi 3 which is connected via wifi. This basically acts as a print server and web based control model. Can't recommend Octoprint highly enough. I even subscribe a few pounds a month to the developer.
I brought my Ender 3 Pro to build a CNC machine. You can see it here (
New build in Clapham, North Yorkshire, UK).
Would I buy an Ender 3 again? No, I'd buy two
The issue you will find is that things take a long time to print, the CNC machine took over 250 elapsed hours to print, so I ran the printer non stop (as much as I could) for nearly a month. I still think I may buy a second one to do things in parallel. A more expensive printer won't necessarily be much faster BUT might print larger objects. Mine does circa 200x200x200 and thats fine for me. Anything bigger than that is going to take days to print.
I use Fusion 360 (the free edition). As of Oct 1st Autodesk removed some features from the free edition but it's not affected me at all. I don't use the machine part of F360 but simply export STL models to my Mac and use PrusaSlicer to slice and dice the model and then send it to the Ender 3 via Octoprint. Quick and easy and no messing around with SD cards.
I had no idea about F360 until probably June this year and have now graduated to quite complex models. I am not a designer (though you can probably guess that). here's the modular dust shoe I'm designing for my CNC. It's modular as it needs to adapt to different heights quickly and easily.
If you want a simple dust hose adaptor, hand draw a simple sketch showing the interior and exterior dimensions, anything that connects to anything else MUST be as accurate as you can make it and sent it to me. I'll knock it up in F360 and print it out for free (assuming its not 200x200x200mm) and post it to you.
I made a number of dust connectors for my Henry vac and dust cyclone.
Here's a screw threaded adaptor
and a rotating hose clamp for a Henry hose
Most of these are pretty simple, but the important things is to get the dimensions right.
The offer to print is there, it will be in Fireengine red as thats the filament on the Ender 3 at the moment.
Rob