good evening

i am trying to engrave on shot glasses but nothing is happening.

i am using black marker paper, using the settings 50/100 and tried 100/150.

its doing the engraving through the paper but when i wash off the paper there is nothing there.

anyone got any tips before I die trying? only got 30 to do for my daughters wedding!!

thanks Trish

I have also done it on marker paper settings which are no different.