So I purchased this: https://www.amazon.co.uk/Portable-Projec......17&psc=1

In the hope of making a corner short (it's all a bit new) for an Osterlind routine "Out of the Room Selection". What radius do most people use for a corner short as I am thinking I need a larger radius.

I bought one of these -
https://www.amazon.co.uk/gp/product/B007......TF8&th=1

The medium setting is 5mm, and is good for corner shorting.
The small setting is 3mm, which is good for creating a standard corner if you have shortened the whole card.

I use 4mm which is very comfortable for standard uspcc / epcc / cartamundi poker size corners.
You can go even finer but it gets hard to handle. It’s easyish to hit a 4mm short just by feel.

The best “cheap” corner clipper is the square block one; “corner rounder 3 in 1”; it cuts 4, 7 and 10mm.

For quality, Eoin O’Hare makes the very best.

I use a Sunstar Kadomaru Pro Corner Cutter (S4765036) Slips my mind of the exact corner measurment, however, the medium setting is ideal for corner shorts and the small setting matches the corner of a factory corner.
https://www.amazon.com/gp/product/B0076F......TF8&th=1

I thought the measurements for the Sunstar Kadomaru Pro Corner Cutter were (S)3mm, (M)5mm, and (L)8mm and after checking, they are. I didn't put them in my previous post because I wasn't possitive. But after looking it up, that's what they are.