Get your first black oxide service for FREE! Let us EARN your trust.

Trusted black oxide service

We Get Gritty!

GRIT was founded on courage, passion and perseverance.  Obstacles don't stop us, we never ever turn around and give up.  We always figure it out and we always race the whole race..  "You Gotta Have GRIT!" 


Blacker than anyone.

We get down to the nitty gritty, so that we can make parts that are darker than black.

Faster than anyone.

We compete on speed, so that we can help you win with a lighting fast 24-hour turn time.

Cheaper than anyone.

Fast local black oxide service northern michigan including Traverse City, Cadillac, Gaylord, Petoskey.

Black Ox blog

Latest industry news related to black oxide metal finishing.

Local Black Oxide Service for Northern Michigan

Built for Speed!

GRIT manufacturing was built for an unserved local black oxide market in beautiful Northern Michigan.  We understand that this is probably the last operation for your part and how critical it is to get it back fast and right.

Since we are strategically located on the east side of Traverse City, GRIT Manufacturing can easily provide a fast 24-hour service to customers all over this region.  Manistee, Cadillac, Kalkaska, Charlevoix, Grayling, Gaylord, Alpena, Petoskey, Ludington, Big Rapids, Clare and the list goes on of who we serve!

GRIT - Get Some!

Are you ready to try us?

Try our service for FREE! Let us EARN your trust!

Better yet, see us in person!

We love our customers, so feel free to visit during normal business hours.

GRIT Manufacturing

6671 M 72 E Williamsburg, MI 49690, US

(517) 648-2735



7:00 am – 4:00 pm


7:00 am – 4:00 pm


7:00 am – 4:00 pm


7:00 am – 4:00 pm


7:00 am – 4:00 pm





kudos from our customers

"Your quick turn-time time prevented us from having to work this weekend, thank you!"

"Your accommodating customer service is unique these days"

"Thank you for picking-up and dropping-off our parts..