Durst RCP 20 processors are designed for EPL2 process which takes longer than RA4. You can still use them for RA4 prints but you have to lower temperature and find balanse. Nevertheless you will have to wait longer for print to be ready.
https://tinker.koraks.nl/photography/roll-another-one-modifying-the-durst-rcp20-for-ra4-processing/
I found this blog which presents how you can modify cogwheels to have proper developing time for RA4. One of the shaft needs to be tighten to 6mm diameter and one of the wheel hole has to be drilled to 9mm. I didn't want to do this so I decided to create those cogwheels that fits on original shafts and do the job. I used as well original belt. Only thing I had to do was to unscrew whole component that has motor, pump and electrical parts in it, move it back little bit to tighten belt and it works like a charm :) Fan design came from blog post author and I past it here with his permission.
You can watch video by clicking on image below.
| durst_rcp_20_cogwheel_large.step | 503.1KB | |
| durst_rcp_20_cogwheel_small.step | 385.8KB | |
| Powerful_RCP40_Blade.stl | 288.8KB |
