Coming form 1 pcs. scrapers made from PLA I found out they are really not good if you want to clean a bed which has just finished an ASA / ABS Print, since they are getting to soft.
So I was looking for a swap blade design where I can add some ASA/ABS blades and I came across the initial design of OlleMark (check out his original design for the different blades). It was just lacking some holes for magnets, so here we go.
The handles come with round holes for the most common manges sizes and there is a “plain” version where you can just punch a hole for your special size magnets (just use e.g MS 3DBuilder and the job is done in less than 10 minutes).

Just print with the Magnet holes facing up and you will need no support.