Qidi X-Smart 3 Riser (Khối kê chân cao su với grip fins)

I discovered that I can't remove my rubber feet on my printer while trying to replace them by another model. So I designed these small riser block. 
I wanted to to rise the machine a bit to help with fan noise (spoiler: it didn't*) and make grabbing the printer easier.

I've incorporated a “grip fins” design in order to grip a bit the original rubber feet so when the printer is lifted the riser stay in place and doesn't fall off or stay on the table. 
They are made with a smaller diameter than the rubber feet and are meant to bend a little bit to accommodate to the feet diameter and hold onto it.
(It works on my prints but FYI the fins might leave a small indent on the rubber feet once removed). 

*The motherboard/PSU does get more air as there is more space for fan intakes but I was hoping to lower the fan noises as well. Unfortunately they seems to be set at constant speed so it didn't affect noise levels.

No need for support. Printed in PETG. You just need a material with a bit of flex (PLA+ should work just as well). 
Might try to revise the model for flexible filament once I buy a TPU roll.

The 10mm short version can be simply use as is or as a test piece if you want to try it out.
I included my working prototype as an alternative. The cut-out for the fins goes all the way which gives a v-slot tube look.

Don't hesitate to leave a comment if you got any feedback or suggestion.