Settings for Engraving on Slate

settings
slate
jules

#41

Thank you for all of the advice on settings and stuff. I made this Alice in Wonderland coaster set.


#42

That last one is one of my favorite sayings! Great job on them! :grinning:


#43

Thank you so much for sharing Jules! These settings worked perfectly :smiley:


#44

Oh good! Glad it worked! :grinning:


#45

Loving these settings!


#46

Ok, I know I made a mistake on the text, but I tried 60 power and it doesn’t look as nice. So 30 power wins

60 left. 30 right


#47

Here are some interesting results and a question.

Why do people use the mineral oil?

The following was done without oil

I noticed that at 30 power, it’s not engraving, its exciting the surface and raising it up. It scratches off. Here I scratched off the top line of text.

At full power and 600 speed it actually cuts into the slate. The 2 circles were testing full power and 500 speed on the left, and full power 1000 speed on the right.
Enough that you can color it.


#48

It enhances the contrast between the slate and engraving.

Wipe it on and let it dry (overnight is fine), then engrave.


#51

Real thin coat though, more is not better and is actually worse. Just wipe on, wipe off.


#52

But my mineral oil is getting absorbed. Its food grade with vitamin E (butcher block oil). Maybe not the right stuff?


#53

I’m going to try shellac over first.


#54

Mmmmmm, bug poop


#55

Bug guts! And alcohol!


#56

Forget mineral oil on slate! Use shellac! You can also use a belt sander on the slate to smooth it out a bit before the shellac. Look at that contrast

Speed 900
Power 60
Lines 270

Sanded/shellac

Unsanded/shellac

Engraved at settings above

One in progress


#57

Looks like I need to get my belt sander setup again.


#58

This is sweet looking!


#59

How’s it look like it handles abrasions? Does the shellac scratch & show white streaks?


#60

No. Shellac also melts into itself. So a dab of shellac would rejuvenate it


#61

more slate…


#62

That looks fantastic. I especially like the way the right side fades into the background. :grinning: