Ever wanted volume markings on your glass carboy like this?
Here is what you need!
1: Razor Blade $.20
2: Armour Etch (3 oz) $12 (enough to do 3-4 carboys)
3: Masking tape $3 for a whole roll
4: Scrapbook numbers $3 for the ones pictured
5: foam paintbrush (not pictured) $.60
Armour Etch can be found at Michaels and Hobby Lobby. This is the smallest bottle they offer. they also have vinyl stencils that you can use to acid etch pictures and words onto any glass (pint glasses, growlers, bottles)
1: Clean the exterior of the glass
2: Mask off a 4 inch wide column with masking tape (for the notches)
3: Add a vertical column unmasked for the numbers
4: Fill the carboy 1/2 gallon at a time and mark the volume on the tape
5: Empty carboy
6: Using razor blade, cut out your volume lines (about 1/4 inch tall)
7: Add the numbers next to the full gallon marks
8: Brush on the Armour Etch to completely cover the area to be etched
9: Ignore bottle directions, leave it for 15 min, not the 5 min it calls for
10: Rinse well with water
11: Remove tape and numbers
I used a 5 gal carboy, you will notice a 5.5 gal hash mark, and the eching ends at the 6 gal mark.