Blower Fan Upgrade - AnyCubic I3 Mega S

You may need this upgrade for your Anycubic Mega S

• If you have heated enclosure or just enclosure
• If you print in ABS and pumping the bed to 110deg C
• If you have problem with filament welded to the teflon tube
• If you want to improve cooling for bridging

This upgrade is to reuse as much as possible the old hardware.

The problems with Anycubic Mega S:

• Remote extruder instead of direct extruder
• The core inside heatbreak is teflon tube extended into
• V5 J-Head hotend is old and not so much accessories, like there is no all-metal design heatbreak, nor different heatsink…

Basically I could just swap out v5 and pop in v6 hotend and call it “that's that” but doing so I couldn't reuse the original hotend cover assembly, hence no cooling for that mather. Anyhow, the original has cooling fan only on left side, with some over-hang printing, the left side looks good but not on the right side.

Printing without cooling is bad, and cooling of Mega S is mediocre at best. Below is the picture of naked V5 hotend without fan for the heatsink nor blower fan to cool extruded plastic.

There are a few options out there like voron stealthburner mod for anycubic, but man, that is way too much to go, in term of money and time, Like print the carriage, the mount plate, then redo all the electrical to the hotend… to the point, I feel it is cheaper if I just save up money and buy better printer, like bambu lab p1s.

So I want minimal upgrade and this is the “open air upgrade”, trying not to replace too much or not spending too much time on this.

Yeah, I ditched the closed-design cover to have better air circulation to prevent heat creep that can weld the filament to the teflon tube. I also use the same style of v6 design

It is still remote extruder, and still sh!t with PETG. The oozing and stringing still very bad. But ABS is quite okay now.

Only 2 brackets to print mostly, unless you need v5 fan shroud as well

Other parts you need

• 2pcs Blower fan 4010 with air duct 
• V5 hotend or V6 hotend
• 6pcs M2 self-tapping for blower fans
• 4pcs M3 threaded inserts
• 4pcs M3 screws x 10mm
• Print fan shroud for v5 heatsink if needed
• 4pcs M3 self-tapping for 3010 fan
• JST PH 2.0 plug , JST XH 2.54 header and crimper

There are more options for v6 hotend than v5 hotend, especially clones on aliexpress. My intension was to use those hotend clones that similar to v6, like this

For now, V5 is still good to go.

The perfboard with 2x JST XH 2.54 connector is to Y split power to blower fans from JST PH 2.0 connector on hotend connection board. 

Yeah, I know the wire of blower fan on the right is too long. I was lazy to trim it short and crimp a new connector for that, so just hang it around somewhere to not drop down to the hot area or get tangled with printing piece.

Like always, there is f3d file for you to play at home.