Toyota Celica Gen 6 Convertible window roller

The window rollers for the Celica Gen 6 convertible are bespoke creations made by ASC when the car was converted to a convertible.

Due to the design, if you put the roof up or down with the rear windows all the way up they will press down on the frame mechanism. Over time this stresses the rollers and they eventually fail.

The most common way to fix them was to either turn your own or buy an expensive replacement and then drill out the posts to mount it. I decided to buy a 3D printer purely to create a replacement.

These have now been on my car for over two years (though haven't undergone many up and down cycles) and are still performing fine.

I've written a guide for how to remove the windows firstly, which is attached. I've not yet written up a guide how to use the roller files. Bear in mind the “squasher” and “sitter” were designed for my G clamp, so may need tweaking or redesigning for yours.

• Window jig - sitter: A conical mount which fills the void on the other side of the window plate from the roller
• Window jig - squasher: The roller fits into the squasher so it can be pushed down by the G clamp
• Window roller: Self explanatory. But to fit I'd recommend printing in PETG, I printed it at a 45 degree angle so there weren't any perpendicular or parallel layer lines. Apply some silicone grease to the ball end on the mounting plate, and with the sitter and squasher in place with the roller, quickly tighten down the G clamp until the roller is forced over the ball.
• Window arm socket/spanner: When removing/reinstalling the windows the window arm which connects the window to the motor uses a very thin nut, you also can't get a full sized socket on there anyway. So this is a very thing profile socket specifically for that nut. I didn't really use these but may refine the idea.