I really love the deep engraving but to get it quicker done you can adjust the settings. But be aware that the look will also get brighter. 

Depending on your machine it can be done much faster and depending on your material.

To  make you coaster long lasting add some varnish. There are many options like oils, sprays and laquer.

For mine I'm using my trusthworthy waterbased glaze for wood. I just add a layer. For this you don't need much. Just to both sides to prevent curling of the wood.

I wish you a great christmas time. I'm happy that I can finally work on more winter and christmas related stuff as this is what I enjoy more than autumn. 

I hope you liked this Coaster as well! ~Anzy