[zakthor]

I inherited an hd77 skilsaw with a nice plastic case. Been using it for 5 years or so.

I cut concrete with it last week and towards the end it was sparking real bad and smoking.

I need a new commutator/armature but they are nla. Cant believe they made these for 75 years and now no more parts.

I know how commutators work, is it something fixable, like with solder and high temp epoxy?

Unit is in great shape except for the sparks and the bad smell.

Went to home depot and even the big concrete saws are battery powered. I guess private equity loves those battery sales. Im an infrequent user but when i use it its all day.

Thinking maybe i can get a good armature from a thrashed unit at a thift store?

And next time ill just buy an actual concrete saw.