Window Adapter for ECC1 Canvas Riser (0.65 mm acrylic)

A window adapter for Tom Hoeppner's "Riser for Elegoo Centauri Carbon (ECC1) with Canvas": https://www.printables.com/model/1791763-riser-for-elegoo-centauri-carbon-ecc1-with-canvas

The original riser is designed for 3 mm polycarbonate window panels. I couldn't find sheet at a decent price, so I reused 0.65 mm acrylic from a broken picture frame. That is far too thin for the original grooves, so I designed these brackets to adapt the thin sheet to the riser. The sheet is held with a clamp fit, so it can't rattle.

All credit for the riser goes to Tom. This is only an add-on for the window panels.

Files
- Window adapter bracket (STL)
- 3MF with my settings

Acrylic sheet
- Thickness: 0.65 mm (from a picture frame)
- Groove width: 0.75 mm
- Fit: clamp fit, no glue and no rattle

The fit is tight, so it depends on how well your printer is calibrated. If your prints come out slightly oversize, you may need to lightly sand the groove. If they come out slightly undersize, the sheet may sit loose, so test-fit a single bracket before printing the whole set.

Using a different sheet thickness
For a wider sheet, open the STEP file and boolean out the groove to match your thickness. You can also do it in your slicer. Add about 0.1 mm to the sheet thickness as a starting point, as I did for 0.65 mm.

Print settings
- Printer: Elegoo Centauri Carbon (CC1)
- Material: Elegoo PETG-CF and Sunlu PETG-CF. Same settings for both, with the temperature adjusted slightly within the filament's range. Both worked well.
- Layer height: 0,2 mm
- Infill: 15%
- Supports: none

Assembly
1. Print parts make sure grove is max 0,65mm otherwise widen grove thickness +0,1mm
2. Slide the acrylic into the brackets. It clamps in place without glue.
3. Fit the assembly into the riser.

Notes
Acrylic doesn't handle heat as well as the polycarbonate Tom recommends. This setup suits PETG and PLA, but I wouldn't use it with a heated chamber for ABS/ASA.