When I did a reconditioning job on a 2nd hand washing machine, including a full strip down, removal of drum from machine, & removal of ineer rotating drum from outer static drum, (to regrease bearings & re red lead paint drum inside etc) I discovered the giant (about a yard diameter) front was held to the drum by one enormous jubilee type clip, (curved to fit round rim) - That front disc (with hole to put washing trhough) was filled with concrete to counter balance the motor at the back - If you ever take off that yard sized disc, it comes down to about one tenth inch of metal, which, concrete filled, would do mighty damage if it dropped on aany part of a human. A bit of thought & care is always good: there's some mighty big springs & weights in washing machines, (plus of course power to make sure is Off.)
