Jump to content
Ultimaker Community of 3D Printing Experts

Custom heated bed upgrade for UM1

Recommended Posts

Hey, so I designed a custom heated bed upgrade for my UM Original... New Z platform (solid aluminum plate) new flanged linear bearings (similar to official bed kit), and using an MK2B heated bed and glass plate with 3 point mount and wing nuts to level it.

So far so good, works fantastically.

But I'm manually controlling power to the bed right now.

I've heard the reason that UM went with the external control board for the official kit is that the PSU shipped with the UM Original isn't up to the task of powering the heated bed and all other electronics.

Is this the only issue?

The reason I ask is for simplicity, I'd love to just wire the heatbed to the UM control board, and simply replace the PSU with one that's superior. But if there are issues with the control board itself, or it's mosfets, or whatever, then perhaps I should go through building an external control board, or just using an SSR.


(oh and if anyone wants pics I can post them later).

Share this post

Link to post
Share on other sites

A common approach before the heatbed kit has been to drive a relay with the mosfet... The relay is hooked up to the heatbed and a seperate 24V power supply...

I didn't like the idea of 2 PSUs and all the relays and stuff, 19V is also generally incompatible with alot of reprap parts, and so in the end I decided to swap the board eentirely...

I now use a RUMBA board running 24V and it drives everything with a ~300W, 24V PSU mounted under the printer...

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Our picks

    • Ultimaker Cura | a new interface
      We're not only trying to always make Ultimaker Cura better with the usual new features and improvements we build, but we're also trying to make it more pleasant to operate. The interface was the focus for the upcoming release, from which we would already like to present you the first glance. 
        • Like
      • 130 replies
    • "Back To The Future" using Generative Design & Investment Casting
      Designing for light-weight parts is becoming more important, and I’m a firm believer in the need to produce lighter weight, less over-engineered parts for the future. This is for sustainability reasons because we need to be using less raw materials and, in things like transportation, it impacts the energy usage of the product during it’s service life.
        • Like
      • 12 replies

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!