Radiator pipe was too close to the skirting board to use a standard ring/circular cover so I made this is Fusion 360 to cover the gap around the pipe.

Print in ABS or similar as those pipes get hot and PLA will warp.

You can change the parameters in the Fusion 360 file so you'll need to measure:

• Top of pipe to top of skirting board
• Diameter of pipe
• Height of desired cover
• Width of desired cover
• Thickness of desired cover

Change the parameters in the F3D or STEP file and everything should re-calculate as all other dimensions, chamfers, round-overs etc are referenced from those measurements.

NOTE: My pipes were at different heights on either side of the radiator so you'll probably need to measure each individually and produce 2 separate STLs for printing.

(I've uploaded an STL example and also the F3D file to customise for your needs)