January 18, 2021
Sanding tool review and instructions

Roto-Rim Glass Sanding Tool Review

Sanding glass bottles can be time consuming and quite messy without the proper tools.

If your bottle crafting has you looking at some serious production time then you may want try the Roto-Rim. Scroll down to learn more about this sanding tool designed by Dave de Neufville and to get full instructions.

Roto-Rim attached to electric motor.
The motor should be securely bolted to a board and clamped to your work table.

The Roto-Rim is a glass bottle sanding tool that attaches to an electric motor. The quiet and smooth running motor offers the right speed to give your glass sanding the proper rotation. With an optional single pedal foot switch control, you can complete your sanding on one bottle and switch out to the next bottle quickly and effortlessly.

Electric motor foot pedal.
Optional foot pedal for electric motor.

Roto-Rim Instructions

You will need a 3/4″ socket with extension to tighten the bolt which attaches the Roto-Rim cup to the arbor. Place the arbor on the shaft of 1 1/3 HP motor (see first picture in the article) and secure with a 1/8″ Allen wrench. If the shaft diameter is 0.500″, the arbor should fit properly. The Roto-Rim is designed to be used with standard twelve ounce beer bottles with a diameter of 2.42”. 

Looking at the end of the shaft, toward the motor, it is essential that the shaft turn counter-clockwise when the motor is running. (Watch the demonstration video below.) This will prevent the bolt that attaches the cup to the arbor from loosening.

Instructions for Scoring and Cutting glass bottles.

Before sanding, inspect the glass bottle to make sure that the cut is reasonably even and that there are no large chips in the rim. You also need to have a container of water available to wet the sanding material. Wearing a pair of safety glasses while sanding is very important!

You are now ready to sand your glass bottle.

Wrap the foam padding that comes with the Roto-Rim around the bottle and allow an equal amount of the glass to stick out on each end. Push and rotate the bottle and padding into the sanding cup until its firmly in place in the metal cup.

Wrapping a glass bottle with foam padding.

The Roto-Rim will sand your bottles very fast! It is not necessary to use the most expensive diamond sanding pads. Conventional sand paper and a wooden block will work just as well.

Watch Nick use the Roto-Rim in this YouTube video.

Once you have the electric motor set up with the foot pedal, using the Roto-Rim is a very easy and time efficient way of sanding a lot of bottles, as long as they are all the same size.

Nick Jager
Nick from Bottle-Lamp is demonstrating the Roto-Rim

I am ready to attach the Roto-Rim to the motors shaft to begin the sanding process.

Starting with 100 grit sand paper, sand the top of the glass until smooth. Dip your sandpaper in water every 15 seconds or so to eliminate dust and friction. You can sand the out rim of the bottle with the same sandpaper, and by rolling the sandpaper you will be able to smooth the inner rim.

Once you have completed this process, go to a finer sandpaper (220 grit or higher) to give your bottle the finishing touch. You will be able to complete the sanding without removing the bottle from the Roto-Rim. Use a strong light or a well-lit area so you can inspect your work.


Overall, the Roto-Rim worked like a charm and it made quick work of sanding a bunch of Corona glass bottles.

This was probably one of the most time consuming bottle crafting tools that I’ve ever set up. Having the Roto-Rim is just the tip of the iceberg. Additional equipment needed is an electrical motor, the power cord that needs to be attached, the optional foot pedal and assembling the base board for motor to rest on. Using a C-clamp, I attached it to my table saw for convenience and the proper working height.

If you only intend to sand a bottle once in awhile, then this might be cost prohibitive for you to purchase. On the other hand, if you are mass producing 12 ounce bottles into drinking glasses or various other crafts then you definitely would benefit from having the Roto-Rim as part of your tool kit.

Leave us a comment below and let us know what you think of the Roto-Rim. What sanding tools do you currently use?

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