Finger Cymbal

Triangle Plus


Order 2 or more Machines. Get 5% off each. Discount in cart.

Triangle Arm


Finger Cym Arm

Plus Body

Horizontal Mount

All pieces interchangeable. Mix and match.

Beater Upgrade Kit

Extra Plastic Ties

Finger Cymbal Mount

Triangle Suspension Mount

Order 3 or more. Get 10% off all. Discount in cart.


Long Sleeve


Short Sleeve


Long Sleeve

Beater Upgrade Kit

The most requested upgrade to The Miller Machine.

Upgrade any existing Miller Machine to hold the new custom designed 5/16" solid body steel beater.

You'll also get all the pieces and parts you need to convert any original Miller Machine to hold the new beater.

[Finger Cymbal Arm, finger cymbal, Miller Machine Body, mount, Triangle Arm, triangle, not included]

11 items left

Customer Reviews

Based on 7 reviews
James W.

I’ve been using Miller Machines since 2015, and never hit a gig without them. An incredible piece of innovation that truly improves mobility within multi-percussion and musical theatre/Broadway setups. Billy is constantly upgrading and improving upon the designs—the recent beater upgrade is wonderfully nuanced. Thank you for all your work, Billy!

James! Thank you for this wonderful review! Billy

Tim G.
Beater Upgrade kit

I’ve been using the Miller Machines on nearly all of my shows for the last 10 years and they’re great products and are totally reliable. The beater upgrade kit gives you extra volume and tone and for me it has meant I never need to resort to using a heavier separate beater to get more sound out of the instruments. Highly recommended.

Great! Glad the Beater Upgrade is working out for you Tim, and thank you for the review! Billy

Brian H.
Beater Upgrades

I recently purchased the beater upgrade for both my legacy triangle and finger cymbal machines. The sound improvement is amazing with no impact to feel or playability. I also purchased the new and improved finger cymbal mount which works great. Thanks Billy!!

Brian, thank you so much for your review, I appreciate it! Billy

Barbara M.

I recently added the upgraded steel beater to my Miller Machine Horizontal set up. It has a lot more clarity than the original beater and I'm very happy with it. That said, it was a little clunky with the combination of the triangle I used (8" - not sure of brand) and things I had to play. Highly recommend all the Miller products!

Thank you for your feedback Barbara.

Ive got a couple thoughts about how we can find a sound that might work better for you. First off, try switching to the brass beater and see how that works. You can also use any other beater that has an 1/8' shaft. So, Stoessel, Grover, Black Swamp, Dragonfly etc... can be used on the Machine. If you have a favorite beater, put it on there, see if that works. They're easy to swap, here's a video (link below) showing you how it's done. Let me know how that goes. Thanks! Billy

What You Get

Custom designed 5/16" solid body steel beater.

Custom Made Red Latex Striking Surface.

Hex Wrench.
(remove old collar-lock)

Eyebolt with Grommet.
(replace old eyebolt)

Retaining Ring.

Easy to Upgrade, watch the video.

Photo of a Miller Machine, Triangle Machine with custom designed solid body steel beater.


The 5/16" solid body beater was designed specifically for The Miller Machine.

Length, weight, and balance (fulcrum) all optimized for The Machine. 

Striking Surface

Includes the custom made red latex striking surface.

Excellent Rebound.
Natural Feel.
Minimal Stick Attack.
Great Visibility in Low-Light Settings.

You'll always get a great triangle sound.

Closeup of Finger Cymbal Machine custom made striking surface.

Swap Beaters

The Beater Upgrade Kit also makes it possible to mount ANY triangle beater with an 1/8" shaft on any existing Miller Machine.

This means you can use any size of your favorite Black Swamp, Dragonfly Percussion, Freer, Grover Pro, Stoessel, etc... on your Miller Machine.

Easy to swap, watch the video.

Built by Hand

Everything's designed and built by Billy Miller in his workshop in Seattle, Washington.

Photo of Billy Miller in his Miller Machine workshop in Seattle, Washington.

"Thankfully, the new beater upgrades arrived just in time to use them on this run!

I knew the upgraded beaters would be better, but I was really surprised with how good they sound! I still play the triangle by hand when I can for more control, but the sound between my Stoessel beaters and the brass beaters with the upgrade is nearly indistinguishable."

Matt Ordaz
La Mirada, California