Its a minor bug, but the EMC value that the table and pad uses is twice what the item's EMC value is set at. This effects both the EMC you get from 'burning' an item as well as creating one.

Related to this bug; the GUI allows you to attempt to create an item when you don't have enough EMC, resulting in no item and a loss of EMC.

For example; a diamond is set at 8K EMC (requires 16K EMC to make due to the bug) and if you only have 9K EMC the table/pad will let you try to make a diamond; resulting in you losing the EMC with no diamond.

Thank you for your time.