I inherited my fathers old radial arm saw,it must have been 30 years old and all metal but the arm wouldn't crank up.It turned out the the only non metal part was a nylon piece driven by the height crank arm and it was long obsolete.I didn't want to throw the tool away and a new one cost several hundred dollars.For a reasonable price they fabricated the obsolete part with steel,serviced the motor and replaced all the old cracked wiring and it works great! I highly recommend them.