Festool FEIN Blade in Other Oscillating Tool

[UndebateableMom]

I have been given Festool blades that I think have the FEIN attachment. I own a Mastercraft oscillating tool, which uses a Onefit blade. Is there an adapter that will allow me to use the Festool blades on the Mastercraft?

Please - I'm not here to debate what brand of tool I own. I have found adapters to go the other way, to fit other blades onto a Festool but can't find information about going the other way.

I'm attaching pictures of a new blade and one that is currently used in the Mastercraft, to show the two attachment shapes.

 

[six-point socket II]

That blade has the "old" Fein Supercut/ Festool Vecturo interface/connector. If I remember correctly the blade was placed on the tool, and then locked by a pin, inserted from the underside & through the blade.

I doubt you will find an adapter to make that work. I for my part have never seen one.

Kind regards,
Oliver

 

[squall_line]

That blade has the "old" Fein Supercut/ Festool Vecturo interface/connector. If I remember correctly the blade was placed on the tool, and then locked by a pin, inserted from the underside & through the blade.

I doubt you will find an adapter to make that work. I for my part have never seen one.

Kind regards,
Oliver

This confirms all of the research that I have done as well.  The old OS 400 blades are not forwards-compatible with Starlock variants of oscillating tools.  There IS an adapter to allow Starlock blades to be used on the OS 400, but not the other direction.

 

[UndebateableMom]

Thank you both for that information. Disappointing, but now I know.