My Carbatec scrollsaw is sold under many many brands, and for the money, it's a pretty good unit but just needs a few minor changes to really make it nice to use.
Scroll Saw Blade Clamps
https://www.axminstertools.com/axminster-blade-clamp-for-awvfs-scroll-saw-400124
https://www.timbecon.com.au/sherwood-scroll-saw-dual-blade-system
https://wenproducts.com/products/upper-lower-blade-holder (purchase 2?)
Throat Plate (STL+STEP)
https://www.thingiverse.com/thing:4625805
00:00 - Video Start
01:00 - Clamping Mechanism
04:23 - Throat Plate
04:34 - The Void