The Blade should be cut to 32mm just get as close as you can while leaving the hole intact as shown in the picture
https://www.amazon.com/TIHOOD-100PCS-Replacement-Hobby-Blades/dp/B07QP8L1QG
Blade Holder: m3x3 Set Screw
Blade Holder Pivot: m3x12
Lever Arm Pivot: m3x12 or m3x14
The spring is 4x25mm and can be harvested from any ballpoint pen
https://www.amazon.com/Customized-Galvanizing-Compression-Diameter4mm-Diameter25mm/dp/B08P8Z1J5S?dib=eyJ2IjoiMSJ9.MV6MsrdnQE62y5FKNRZtK6UdLBCX31nGi2s6hkovtYis--nOkcgitWkqqFbCibf4oLEpWLnPnKmEarsU6uDSk6Z-nBmaIVqphlRyqfL4JMQ9NjmwcHKB5zeLzhCBUOyOb0JBUV3jK00JjK9rYtcz6Gqf-qSA7Ge78s40KoVVbUOR5bk86FCWI5MdzAyMOMESQG3SevxNR3y8rNA9qJ1ZaAh84z4YFoz6DRNPxULzqLg.QoK2GZSO728af7w0xjP5IKhKsQo4QNEYLmSLRcpJwKw&dib_tag=se&keywords=Pen+Springs&qid=1736442619&sr=8-8
I have edited the lever actuator from a different design it does work but I hate how it looks
Changes
v2.2 - Changed blade length to 32mm however down to 30 should still work
Increased Blade Cutout length inside of the front mount to prevent binding
Created flat stop block on Blade Holder to prevent binding
Created small chamfers on print bed side of blade holder to hopfully prevent having to be filed down
Increased Clearance in Lever arm for new Blade holder
v2.3 - Reinforced lever arm
v2.4 - Made lever arm thicker and made adjustment to the lever mount for the same fit
V2.5 - Created left and right variants of the fronts with accel attachments
The author marked this model as their own original creation.