be to install a bed levelling probe, there is a significant interest to install this mod
now.
There are basically 2 options:
1/ you want to keep the stock fan. Then print the “bullseye” base and duct and install
the stock fans on it. Easy and straightforward
2/ you want to install a bigger layer fan than the stock one. Then you need to cut and
replace the fan with a “5015” type of radial fan and then print the “petsfang” parts.
I recommend the first option unless you know exactly why you need an upgraded
fan. All this is very well documented online by the creator and I leave the rest to you.
I am myself printing with the Bullseye with great results. I will move to the Petsfang
when I will have the motivation to cut through the stock fan cable and solder in a plug
for a 5015 fan. Using only stock parts was the greatest convenience of the Bullseye.
If any question I recommend you start here:
http://www.dpetsel.com/because-you-asked.html
Optional – Install a bed levelling probe
After having changed the levelling knobs, a decent level of bed levelling has already
been achieved. Although this was sufficient to print the other upgrade parts,
manually levelling the bed is a constant control and tuning of the printer before every
print. this means that it is difficult to go further with the printer and enable for
example remote printing, as you do not have certainty of the readiness of the printer
at the moment when you want to remotely start a new print.
This is what auto bed levelling helps achieving. This is your second big move
forward.
There are many probes on the market and I don’t want to start any comparison here.
As far as I am personally concerned, I considered 2 options:
1/ you want to implement a capacitive probe with minimum modification to the printer
and maximum customer support: go for the TH3D EZABL probing kit.
https://www.th3dstudio.com/
2/ you want to implement a contact probe with a little bit more cable manipulation
and online community help: go for the Anctlabs BLTouch probe.
https://www.antclabs.com/
I personally went for the BLtouch probe essentially because of the shipping &
customs costs from USA to Europe, while the BLTouch was available at my local
hobby store. So I cannot give feedback on the EZABL kit, which seems very popular
nevertheless. As I said, this is not a comparison and all systems are fine.