I'll get straight to the point. I'm currently doing a course at my local college for furniture making and I recently had a heated arguement with my lecturer on the cost of making furniture for someone. He told us to add wastage which is 10%. So for wastage I've added 10% to the timber and plysheet used. But apparently since we are charging for the labour which in total was 200hours the lecturer said we have to add wastage to labour as well. I know every case is different but in your experience have you/ will you charge wastage for labour? His arguement is that, even if we make the mistake it’s up to the customer( the one requesting something to be built) to cover for the time wasted.
What are your thoughts?