Skywatcher 250/1000 quattro + steeltrack focuser users. Help! - Forums

Topic starter

12 hours ago

"Hi everyone,

I'm planning to 3D print a custom base to mount a Baader Diamond Steeltrack on my Sky-Watcher 254/1000 Quattro (10") Newtonian. To make sure the design is perfect and avoid any flexure or tilt, I need to verify the exact dimensions.I have my setup in a hosting so i need some measurements before installing

If anyone has this setup or a compatible base, could you please provide the following measurements?

Screw Hole Pattern: The exact distance (center-to-center) between the 4 mounting screws (e.g., 85mm x 85mm).
Flange/Dovetail Diameter: The diameter of the circular part where the Steeltrack body actually sits and is clamped.
Measurements of the dovetail or adapter.

If you have a 3D file (STL/STEP) or a technical drawing, that would be even better!

I am using an ASI2600, so rigidity is my main concern. Thanks in advance for your help!

Clear skies!"

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Craig Towell

10 hours ago

It won’t help with the hole pattern on the tube, but the Baader technical drawing for the versa base that the BDS-NT ships with should answer 2 and 3.

📷 IMG_2117.jpeg

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Craig Towell

10 hours ago

Just to add, from a stiffness perspective it is greatly improved by using a CNC aluminium spider which helps to brace the thin steel tube in front of the focuser. You can always add a second CNC aluminium ring (e.g. the CYCK spider with the vanes cut out) behind the focuser for extra stiffening.

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Brian Puhl

IOTD Staff

7 hours ago

I just measured and drafted a base for mine to attach to my 18” dobsonian last week. I’ve test printed and it fits perfectly. The only problem is I’m probably missing a couple measurements you might want, as I am adapting mine for a flat platform and used the inner M4 screws to attach a base. The base does not protrude beyond the adjustable mounting flange. If you still want it, I can log in tonight when I get home and upload the file.

Also, I do remember seeing a base already drafted up by someone on MakerWorld, I’d take a look there.

📷Here's the prototype

20260314_220226.jpg

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Jandro.rm

Topic starter

6 hours ago

Craig Towell · Apr 8, 2026, 10:24 AM
Just to add, from a stiffness perspective it is greatly improved by using a CNC aluminium spider which helps to brace the thin steel tube in front of the focuser. You can always add a second CNC aluminium ring (e.g. the CYCK spider with the vanes cut out) behind the focuser for extra stiffening.

Si, ya tengo una araña Cyck, y le da mucha más estabilidad al equipo, sobre todo a la colimación

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