The Kobra S1 Classic dual riser works for both the Ace-pro and the Ace-pro 2.

NEW: 2026-6-17 Added a universal version of the Kobra S1 Classic dual riser which works with both the Ace pro 1 and the Ace pro 2. Please download and use the files "Kobra S1 Classic dual Universal". The only change is the removal of the pads and modification of the top profile on the rear right, rear left, middle right and middle left and the side wings- no need to reprint the rest. I have left all other versions there for backward compatibility. I have verified the design but have not test printed it. If there are any issues please let me know so that I may correct them. Thank you.

NEW: Added an Ace-pro V1 to Ace-pro V2 adapter. Free to download on Makeronline: https://www.makeronline.com/en/model/Ace-pro%201%20to%20Ace-pro%202%20Adapter/279394.html?trackModuleType=10

NEW: I have added a top mount TPU spool holder for the S1 Classic riser. It is free to download from Makeronline: https://www.makeronline.com/en/model/TPU%20Top%20mount%20spool%20holder%20for%20Kobra%20S1%20Classic%20Riser/251705.html?trackModuleType=10

NEW: I have added a Multiboard side mounted adapater: It can be downloaded for free on Makeronline: Link: https://www.makeronline.com/en/model/Multiboard%20adapter%20for%20Kobra%20S1%20Classic%20riser%20%20(single%20and%20dual%20Ace)/248356.html?trackModuleType=10

NEW: I have added a side mounted build plate holder. It can be downloaded for free on Makeronline: Link: https://www.makeronline.com/en/model/Build%20plate%20holder%20for%20Classic%20single%20and%20dual%20Ace-pro%20Kobra%20S1%20riser/233607.html?trackModuleType=10

This model is a riser for the Anycubic Kobra S1 that can hold two ACE-PROS.

The riser features (some of the add-on features are available as free to download models on Makeronline):

• Rugged design to safely hold dual Ace-pros with filament
• Can hold two Ace-pros
• Two large storage drawers with customizable compartments.
• Side mounted external spool and mount;
• Corner filament guide. It helps prevents jams and tangles by routing the filament around corner and connects to the rear Bowden tube;
• Integrated build plate holder that can hold multiple build plates;
• Tool tray add on
• Lid riser;
• LED mounting bars and LED rear housing;
• Customizable sign (a blank sign STL is included)
• Much more.

UPGRADING FROM SINGLE TO DUAL S1 RISER

If you printed my regular S1 riser (not the LITE) you can re-use many of the parts as they are the same. However, you will need to reprint the rear (left and right) and middle (left and right) as these are different. You will need to print the wing extensions and brackets as well.

Specifications:

The riser adds 15 cm (6 inches) of height to the Kobra S1 and Ace pro combo.
Total height with Ace pro opened is approximately 107 cm (42 inches). The Kobra S1 riser requires about 2.5 kg of filament for the base unit including drawers and inlays. The width of the riser is approximately 80 cm (31 inches)

Instructions

All parts are snap fit and require no external hardware or glue.

See the instruction gif in the model's description photos. I also uploaded a zip file with all the instruction photos.

Add-ons and external model links - available for free download on Makeronline:

Side-mounted build plate holder: https://www.makeronline.com/en/model/Build%20plate%20holder%20for%20Classic%20single%20and%20dual%20Ace-pro%20Kobra%20S1%20riser/233607.html?trackModuleType=10

NEW RECOMMENDED - Side mounted external spool holder with interchangeable spindles: https://www.makeronline.com/en/model/Interchangeable%20spool%20holder%20for%20Kobra%20S1%20riser/185868.html

NEW: - Modular tool tray: https://www.makeronline.com/en/model/MODULAR%20TOOL%20TRAY%20FOR%20KOBRA%20S1%20RISER/175361.html

• Side mounted external spool holder.
  Link: https://www.makeronline.com/en/model/EXTERNAL%20SPOOL%20HOLDER%20FOR%20KOBRA%20S1%20RISER/162262.html

• Corner filament guide
  Link: https://www.makeronline.com/en/model/Filament%20guide%20for%20Kobra%20S1%20riser/157315.html

• Lid holder: Link:https://www.makeronline.com/en/model/Lid%20holder%20for%20Kobra%20S1%20riser/157317.html

• LED housing: Link:https://www.makeronline.com/en/model/LED%20housing%20for%20Kobra%20S1%20riser/157316.html

• Tool tray: Link: https://www.makeronline.com/en/model/Tool%20tray%20for%20Kobra%20S1%20DUAL%20ACE%20PRO%20RISER/162256.html

• Drawer comparments Link: https://www.makeronline.com/en/model/Drawer%20compartments%20for%20Kobra%20S1%20riser/157319.html

Hot end tray (design by aeromedic7 on MO) https://www.makeronline.com/en/model/Noozle%20and%20hot%20end%20tray%20for%20Kobra%20S1%20Riser%20(Kobra%20S!%20Riser%20by%20Darren%203D%20Prints)/172411.html

Nozzle and hot end compartment (by Brody Richardson): https://www.makeronline.com/en/model/Gridfinity%20Nozzle%20and%20hotend%20compartment%20for%20S1%20Riser/180020.html?fbclid=IwY2xjawKF1ElleHRuA2FlbQIxMABicmlkETFMNmdBd1Bia1NOM2prZlZsAR7auQOcwW2oU3aHYwKsY49Vxl2yY-848MtM7ZOxXPqHeE6gdu08sQR4-sdSfA_aem_PIkve61tzVdUrS1dSXmNdw

Side inserts with lid holder: https://www.makeronline.com/en/model/KOBRA%20S1%20RISER%20Lid%20holder%20side%20inserts/184870.html

3d printing

A print profile is included for the S1. I highly recommend you use the print profile as all the support is painted and the parts are correctly positioned.

I HAVE PAINTED SUPPORT ON ALL PARTS ON THE INCLUDED PRINT PROFILE. SLICE IT USING TREE MANUAL.

I have printed each part and tested everything. Tolerances are tight where they have to be. If you are having issues with your printer, your filament or adhesion I suggest you ask for help on Facebook or a forum as I cannot help you there.

I use dovetail joints. If it is a tight fit push the joined parts together as this will give more clearance.