How to choose a magnetic chuck: five factors that decide the grip
Contact area, surface finish, material, heat treatment and thickness decide how much of a chuck's force reaches the job.
Blog
Selection guides and engineering notes from Sarda's workshops: how to hold, lift and clean steel with magnets.
Permanent, electro or electro-permanent: how to choose a lifting magnet
How the three lifting technologies compare, and how to derate a magnet for thin or long plate.
Residual magnetism after grinding: why it happens and how to remove it
Why hardened parts stay magnetised, and which demagnetizer suits tool rooms, production lines and heavy parts.