How can I calculate the exact costs of a printing?

Greetings to everyone!
I own an Ormerod and I am looking foward to print a large ammount of items, but I don't know how to calculate the exact cost of a printing.
I saw that the program Slic3r offers the value "volume" for each object converted, but I don't know how much "volume" I can print with a 100mtr filament (or the ammount of electricity used for the entire work).
Is it possible to use this value (or any other value provided by Slic3r) to estimate the cost of a printing with an Ormerod?
Thank you for your help!

You can easily work out the volume of 100m of 1.75mm diameter filament.

If you've no idea where to start, my advice would be to hire an accountant to help you work out the printing costs. Without an accountant (and perhaps even with one), you will probably overlook some of the costs, such as costs associated with maintenance and depreciation.

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

Don't forget the cost of electricity.
The filament cost, unless it's a very dense print is pretty low. Weigh the finished print, and then compare that to the cost of 1kg of filament.
The electricity cost you can guess pretty well at 200W/hr or there abouts, So 5hrs is approx 1 unit.
I have a power meter in the workshop here, I'll rig it up later to check that.
Add on the maintenance costs, and depreciation.
Lastly remember the time you spend at the machine, so allow your hourly rate.
Cleaning materials etc.
It adds up, but it's not terrible.

I'm now selling my prints, and it's working out nicely.

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Please send me a PM if you have suggestions, or problems with Big Blue 360.
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Hi Kim

Are you using this web site?

3dhubs

Do I remember that you spend a lot of time at sea? Your Postcode on this web site would be interesting?

Lloyd