That warning is a kin to the "do not use Teflon tape" on fuel connections.
Its a competency/skill issue, not an application problem
Unfortunately, "Professional" means nothing anymore other than you're paid to do a job anymore. Most are what we called "rod burners" back in the day.
The state of the Trades industry is abominable. Nine out of ten fabrication shops I interview to qualify to do fabrication work for our company don't have a single professionally trained or certified welder on staff.
The sad part is that most of the tricks of the trade (fit and finishing) that where pasted down to me during my apprenticeship have long since been forgotten. Have only met few who even know what a spark test is, let alone be able to pass one.
I'll get off my soap box now.
No grinders......lol
Aluminum is a difficult material to process as it poses a unique set of challenges, particularly when it comes to grinding. The best way to ensure that you’re grinding process is efficient while also providing you with the desired result hinges on using the correct abrasive at all times.
www.thefabricator.com
Chose the right wheel/disc to address the pre- & post-weld operation to improve quality & productivity while reducing downtime & labor costs.
www.fabricatingandmetalworking.com