Due to an ongoing labor shortage, we have been mostly working in the shop to get parts made. The best and quickest option to reach us currently is via email. Please use our Contact Us form and we will get back to you as soon as we can! Thank you! 

We can take your instrument from good to exceptional! Bach and Yamaha custom tuning slides and leadpipes Trumpet repair parts for individuals, schools,
dealers, repair techs, and manufacturers.


M/K Drawing & Bending –  Custom tuning slides and leadpipes for Bach, Yamaha, and more.  Trumpet repair parts for schools, dealers, repair techs, manufacturers, and individuals.
Trombone leadpipes, bracing, replacement inner and outer slides.
We can help take your instrument from good to exceptional!


At M/K, we have 60 years combined experience in manufacturing musical instruments. All of our components are hand crafted in Elkhorn, Wisconsin USA, long known for musical instrument manufacturing and repair (Allied, Badger State Repair, Getzen, and Frank Holton Co. all hail from Elkhorn.)

img_0782-lgIf you play a Bach, Yamaha, Schilke, Getzen, Calicchio, Benge and others, M/K has the ultimate in custom tuning slides and leadpipes. Whether you’re a teacher or student, artist or amateur, M/K has the components to take your Bach, Yamaha, Schilke, Getzen, and more to the next level. Custom leadpipe and tuning slide conversions are also available. We’re pleased to announce that we are starting to offer custom 1st, 2nd, and 3rd valve slides for Bach trumpets; please visit the New Items page for more information.


M/K Drawing and Bending has acquired Millard Machine in Elkhorn, WI.  We now have full machine shop capabilities.  Millard Machine has been involved with the instrument manufacturing industry since 1947.  Millard has made everything from braces, receivers, balusters, valves, ferrules and more. Millard Machine also has capabilities to make mandrels and tooling for manufacturing processes.  If you are a manufacturer, dealer, or repair shop interested in any CNC turned products, please contact us to discuss your need.

We are pleased to announce 2 new lines of trumpets:

A .470 bore Jazz Tribute and the Spencer UK line of Bb and C trumpets; more information on these models are available on the New Items page.

If you’re a repair shop, dealer, or small custom manufacturer, we can help you as well. We offer slide tubes for Bach and Yamaha trumpets (several bore sizes) as well as French horn tubing for Conn and Holton models.

We produce component parts for some of the most upscale instruments in the music industry. If you’re a small custom shop or a manufacturer, don’t hesitate to give us a call. We’ve done custom private label work since 1990 and would be glad to meet your needs as well.

Trial Policy

Alloy Options

Guppy Products – BumbleBee or Guppy T.M.C. (Trumpet Mouthpiece Comparator)

We are currently looking for dealers to represent and promote our products nationwide, use our Contact Us Form for details!

Check back often-new items are currently under development!

Mike Bulow
M/K Drawing & Bending
N6685 Millard Rd.
Elkhorn, WI 53121 USA
Phone (262)723-6780 Fax (262)742-3942