Onebyone

https://sewingdocacademy.com/remove-...r_a1BerCZ_x0GA

This new website has a lot to offer sewers and quilters.

Main page is https://sewingdocacademy.com/

KalamaQuilts

no pricing yet, but it is a currently unserviced market.
Nice to know she can get the plastic gears for the 500-600 Singer touch and sews

Onebyone

Once you get the housing off then cleaning a machine is easy. Of course it won't be for those who still have a warranty on the machines. I signed up so I'll post when the lessons become available and the membership fee and the model of machines used. I think one saved cleaning bill will more then pay for the fee.

peaceandjoy

The Featherweight Shop offers a lot of information free. Without paying $150 - $250 for the online classes, there's no way to know how much more detail the SewingDoc's classes are, to know whether they are worth the cost of getting information that is already available online for free.