gotters When you say secrets do you mean design choices, materials or actual things in the unit he didn’t spot in the tear down ?
Yes, all 3, for the last one not necessarily didn’t spot, but didn’t understand the significance of..
The comments about metal gears good, plastic gears bad is a stupid one…it’s generally now the other way round for things like a grinder.
In the right applications, metal gears are fine…in a Grinder that’s not always the “right” application for metal. Gears in a spur gearbox (especially metal ones) have lubrication challenges…with a planetary the lubrication stays in the gears easier.
https://www.precisionmicrodrives.com/spur-versus-planetary-gear-types
http://www.zonpoo.com/planetary-gearboxes-advantages/
One of the concerns I would have about the Lagom is the spur gear system and keeping the lubrication in the gears (which I believe are metal)….So much, so I would advise anyone owning one these grinders to check the gearbox every 6 months by removing the cover, and ensuring the grease is properly distributed. Especially if they get more noisy! If I had one, I would also be thinking about changing the grease for new grease every 1-3 years depending on use.