Toto Toilet Flush Handle

I made a replacement toilet flush handle — Toto lever style vs. rotation — to replace a cheap chrome-plated plastic one. Aside from not matching the rest of my bathroom remodel, the old one was a plastic replica of a genuine Toto replacement that is supposed to be made of zinc alloy (pot metal), but at least a metal one would carry some weight.

The design I chose was a simplified round knob with an oblong protruding arm to have a similar look to American Standard “Studio S” line of decor. Studio S is a modern, minimal design with arcs and circles. We did not replace the toilet in our remodel, as it works perfectly, but the chrome-colored handle had to go.

This keeps the original mounting hardware and lift arm internals by design, though an excellent mount was created by @Xials_259011 if you need that part or want to see what this handle is designed to mate to. I did not need to use a printed mount, but that one looks like it would have worked fine. You’d still need a square rubber gasket for it and a plastic washer and nut to secure it to the tank. Again, I already had those items.

You don’t have to use my Studio S shape. I am including a simple circle model that you can use as a platform to add just about anything. The round example is just a 2mm shell with mounting hold and pivot point that you would import into CAD and merge with some other shape of your choosing. You will want to preserve the inside negative space to give room for the mount to pivot properly.

To align some other design, the lone reinforcement rib from the lever pivot points forward, so this is where my Studio S version has the protruding knob part. You could do something similar knowing the alignment here.

Finally, the mounting hole just a cylinder with a hole for the screw. Depending on the screw you have, you might need to enlarge the hole. I had to drill it out a bit with a 9/32” bit which is tricky because it will grab and pull the drill in. Pulsing backwards reams out the hole a bit first. Be careful here. I printed in PLA and that worked fine, but my early round prototype’s screw hole was way too small so it cracked as I tested the screw. In the end, the hole is not threaded but should mold to your screw.