Saturn 4 Ultra Build Plate Mod

When I and others had bought the Saturn 4 Ultra bundle with the Mercury XS washing and curing station I was disappointed that the build plate no longer fit into the washing station to be able to wash both the build plate and the print at the same time. 

The Fix?: Simply removing approximately 6mm of thickness from both sides of the plastic resin shield on the build plate. 

From my testing it does not affect the auto leveling of the printer and the printer is none the wiser to the change since its a simple deflector shield and no electronics or sensors are located in or near it.

The total print size is 225mm x 134mm. Its not small but should fit on most printers.

The Elegoo Saturn 4 Ultra's build plate comes apart into three parts. 
The top part being the aluminum mount and springs to the 

• The top part being the aluminum mount and springs for positional alignment
• The middle part being injection molded plastic as a resin shield
• The bottom part which is the aluminum build plate and “pins”

Disassembly of the build plate can be tricky but once you get it the first time it becomes much easier.

Disassembly Steps:

1. Remove the top 10 hex screws. There is only two types and they are not easily confused.
2. Remove the plastic covers covering the positional alignment spring mounts. These are deep inside but easily reachable with a magnetic bit.
3. Remove the top aluminum mount and set to the side
4. Slide the plastic resin shield down as far as it will go (towards the top of the build plate)
5. Use a crescent wrench to unscrew all 8 pins. (Mine had thread-locker on them so they may be buggery the first time) 
6. Remove the plastic resin shield and replace with the printed part!

NOTE: Upon reassembly the rubber O rings may want to bend out of the wells they sit in and may need coaxed into place when reassembling the plastic resin shield to the aluminum mount.

Follow the steps in the reverse order to reassemble. 

I printed mine out of ABS. 

Please don't hesitate to let me know of any fitment issues or adjustments that need made and i will adjust it as soon as i can!