Frost Custom Brass

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Frost Custom Brass trumpet, cornet, flugelhorn mouthpiece services Custom brass mouthpieces and accessories - and other services - please visit www.frostcustombrass.net.

Busy, busy, busy! Grateful and having a blast!I love how these turned out - back to the lathe!
23/02/2025

Busy, busy, busy! Grateful and having a blast!
I love how these turned out - back to the lathe!

These are up on the site now! 😀Rim/Cup of Acrylic, Lexan, or Delrin with Brass UnderpartA mouthpiece is made where the r...
29/12/2024

These are up on the site now! 😀

Rim/Cup of Acrylic, Lexan, or Delrin with Brass Underpart

A mouthpiece is made where the rim and cup are plastic* with a brass blank fixed to the outside. The result is a plastic* rim and cup with the qualities they offer, but with the extra 'brass-ness' of the brass blank and backbore as one piece. These take a plastic* rim/cup and get it much closer to playing like a brass mouthpiece. 

Acrylic plays the most like brass. If you are looking for a plastic top with brass-like qualities, go with Acrylic.

Lexan has more 'grip' than silver plated brass or Acrylic.

Delrin has less 'grip' and feels softer and more slippery than silver plated brass or Acrylic. 

--A mouthpiece can be made with your choice of stock shapes and/or shapes from the duplications catalog.

--A mouthpiece can be converted - you send in your mouthpiece and the rim/cup is duplicated and converted to plastic while retaining the original blank and backbore.

--An existing plastic top can be converted to accept an underpart.

There are two options:

1. The shell/blank is below the rim. This way the entire outer of the rim is plastic. This prevents the lips touching metal when releasing the spit valve. 

2. The shell/blank extends halfway up the rim. This has more metal than the below the rim shell, but your lips may touch the metal when releasing the spit valve.

*Acrylic, Lexan, Delrin

https://www.frostcustombrass.net/acryliclexandelrinrimcupbrassunderpart.html

Hey Matt,Outstanding job on the Hagstrom rim, undercut using your “MC TURBO CHARGED CUP”, 27 drill with the amber acryli...
16/12/2024

Hey Matt,

Outstanding job on the Hagstrom rim, undercut using your “MC TURBO CHARGED CUP”, 27 drill with the amber acrylic shell. I’m loving it.

Once again the Frost has arrived in Maryland!!!

Please post on your page if you’d like!!!

Merry Christmas to you and your family!!!

John Miconi

Exited about this! These will be up on the site in a month or so if all goes well 🤞. This takes the acrylic top/brass ...
08/12/2024

Exited about this! These will be up on the site in a month or so if all goes well 🤞. This takes the acrylic top/brass shell design and applies it to a full brass underpart with the rim/cup being acrylic. This plays even more like a solid brass one piece, but still has the whole rim and inner cup acrylic.

This particular example is the prototype and has an 'anchor grip' rim per the client's request. It is a full duplication of the client's one piece 2CB-C.

They are available before they go on the site via email at [email protected].

Acrylic, acrylic, acrylic! Making lots of acrylic tops and acrylic tops with brass shells.Lots and lots of fun. ...
28/11/2024

Acrylic, acrylic, acrylic!
Making lots of acrylic tops and acrylic tops with brass shells.
Lots and lots of fun.

A trumpet mouthpiece with a cup inner diameter of 1.050"! 1C width is 0.650" for comparison. Made with a 25 throat and a...
28/11/2024

A trumpet mouthpiece with a cup inner diameter of 1.050"! 1C width is 0.650" for comparison. Made with a 25 throat and a short shank backbore.

Harmonic balancer in aluminum! Brass and bronze have been the most popular, fun to see an aluminum one go out the door. ...
21/11/2024

Harmonic balancer in aluminum!
Brass and bronze have been the most popular, fun to see an aluminum one go out the door.
Pictured on my Thane.

Some fun stuff here! Four custom rims and various threadings. All rims have the contour of the original, but three of th...
20/11/2024

Some fun stuff here! Four custom rims and various threadings. All rims have the contour of the original, but three of them are scaled smaller and/or have a different meeting point with the cups.

A trombone rim in for duplication in amber acrylic and clear Lexan. Clear and amber acrylic now available for trombone r...
17/11/2024

A trombone rim in for duplication in amber acrylic and clear Lexan.

Clear and amber acrylic now available for trombone rims/tops. More colors in the works!

An old custom mouthpiece - underpart rethreaded to accept different threads (more common), rim duplicated in clear acryl...
02/11/2024

An old custom mouthpiece - underpart rethreaded to accept different threads (more common), rim duplicated in clear acrylic 👍

What a fun project and learned why the client likes this mouthpiece so much in Eb trumpet.

"T CUPP" custom clear acrylic top with raw brass backbore. A duplication of the client's preferred rim, preferred cup, t...
27/10/2024

"T CUPP" custom clear acrylic top with raw brass backbore. A duplication of the client's preferred rim, preferred cup, throat, and backbore. Heck of a fun project, and it turned out gorgeous.

A fun project as always! A2L piccolo leadpipe for Kanstul 920 pics. This is the A length, 2 size, and L weight - most po...
11/10/2024

A fun project as always! A2L piccolo leadpipe for Kanstul 920 pics. This is the A length, 2 size, and L weight - most popular!

It's been wonderfully busy and so I haven't had much time to post the fun projects. Grateful for you all keeping it busy!

A long time client dropped his main mouthpiece and it hit on the shank end - pics are of the rebuilt shank (raw brass in...
03/07/2024

A long time client dropped his main mouthpiece and it hit on the shank end - pics are of the rebuilt shank (raw brass in pics). The shank is now round and has the correct gap.

Custom bass trombone rim - the client's XB114 was duplicated, then we retained the inner and outer contours and added wi...
29/06/2024

Custom bass trombone rim - the client's XB114 was duplicated, then we retained the inner and outer contours and added width at the high point to make a wider overall profile, yet keep the feel familiar. Pictured next to the original rim. This is a popular solution for a little more cushion or, in this case, to help sealing on the chops.

Three 3C's! 1. Rim duplication of a Curry 3C. with my MC cup (C type cup with zip) and 5 backbore (commercial type, but ...
26/06/2024

Three 3C's!
1. Rim duplication of a Curry 3C. with my MC cup (C type cup with zip) and 5 backbore (commercial type, but playable in all registers).
2. 3C rim with B cup and 24 backbore.
3. ACB MV3CS rim and cup duplication with MTV backbore.
..in the background is another batch of adjustable cup tuba mouthpieces for CHI BRASS Music. Busy, busy, busy!

Rim duplication with Lexan, Acrylic, and Delrin rims.When compared to silver plated brass:Acrylic is the most brass like...
23/06/2024

Rim duplication with Lexan, Acrylic, and Delrin rims.
When compared to silver plated brass:
Acrylic is the most brass like.
Lexan has more grip.
Delrin has more slip, feels softer.

Two beautiful acrylic tops with raw brass backbores. On a tight timeline with these, but got them out in time! They turn...
22/06/2024

Two beautiful acrylic tops with raw brass backbores. On a tight timeline with these, but got them out in time! They turned out fantastic.

S5M top, with 5 backbore - a touch narrower inner diameter than the client's normal 4 size orchestral mouthpiece (same S rim), with M cup. The M is very popular for pops.

P9 top, with 11 cornet backbore, ready for pic - the P9 feels similar to a 3 size mp on the chops, and the 11, 117 style backbore is a perfect match.

The first three pics are of a Bach Corp. New York 10 1/2CW, the following pics are after a Bach My Vernon 1 1/4C rim and...
19/06/2024

The first three pics are of a Bach Corp. New York 10 1/2CW, the following pics are after a Bach My Vernon 1 1/4C rim and cup duplication we're cut into the 10 1/2CW.
The client really loves the way it plays.

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