I did the old by the pound sales until I could get a fix on the actual costs to run the router. And to get up to speed on cutting with a robot. It ran a lot more then while I spent time setting up jobs and doing it by the hour and never felt like it was worth it at all.
I can say this,, the power costs are higher than we think. And the mistakes on material are fatal. That is there is no economical way to replace material that was cut away. So cutting out the wrong job on a $300 sheet of HDU is an eye opener.
So, I think its stupid to price the work by the pound, by the hour.
So, I set up a job to make parts of a job. It is priced according to value added and let the machine run with no thought on losing money. It runs a whole lot less now but makes whole lot more.
I 100% agree with Dan and Sign maniac.
We have thousands of dollars invested in these setups plus the hundreds of hours getting to know the software and setting up the work area. And the traveling to training camps to get competent with the tricks of the trade. Especially for the 3D work. No more glorified jigsaw here unless it is for fun.
The 3D work makes our stuff custom made.