Roland Piano KR-570 Key Weight Repair 

Excellent video!! You are a fantastic speaker and teacher. Every other word out of your mouth is not “ummm” or “literally”. Very descriptive, easy to follow. Love it!!!

Excellent video, very cool on the 3D-printing. These instructions also work on a KR-375 (very different from a KR-370!), though I glued the weight arm and swapped it with F7

I keep a full octave of key weight arms in my piano bench. I haven’t broken one in a while but now Ive probably jinxed myself.

Thx, I had the same issue and it is fixed now! Video was very helpful! I used epoxy glue to repair the broken arm.

How can i find a project to print, or you know some marketplace to buy?I have one kr 570, four keys broken. but here in Brazil didn't find to buy it. Hope you answer me, thanks

Very cool. I also found a 3D file. However I can’t find one for the black keys. Any idea where

How are they holding up after many months of use? I'm trying to fix a friends piano but I am curious how long the 3D prints are holding up?

I have one of these that I have been meaning to try and fix up for the last few years. It has no less than 30 broken counterweight arms I need to address. Hadn't thought of 3d printing, and I'm wondering if there's an STL also available for the black-key arms which are shaped differently from the white keys'. I do also notice that the thickness of your 3D printed part is different and I'm sure overall it's a little differently weighted itself vs. Roland's factory arms from the late 90s. Does that middle C feel perceptibly different than the keys around it?

Me also interested to know how to find an STL for the black keys hammers. On my Roland they get cracked the same as the white ones, all of it across the keybed.