At some point early in the manual some #&%)¤% tells you to slap on your BID layup and "simply" stipple out any air bubbles.
If you use Jeffco epoxy things are not so simple, since the air bubbles are virtually invisible, because Jeffco combined with fibreglass has the excact same color as the underlying air bubbles. When hardened, the Jeffco takes on a greenish color, that makes all the bubbles show up beautifully! WHAT A PAIN!!!
Back in them good ol´ days when I built sailing boats, our paint brushes were too small to stipple 60 ft. hulls, so we rolled!
These fibreglass-airbubble-rollers are not carried by hardware stores, and are usually too large for our kinda work, so I have made one myself.
The job goes like this:

Take your favorite 1/4" paint roller shaft.

Discard the rock hard roller that is stuck to the shaft because your wife didn´t have time to clean it after she painted her favorite flower pots and most of the stairway they stood on

Shorten the business end ( of the roller shaft! )to approx. 2"

With your favorite hacksaw, make a small groove for a circlip

- made out of a AN936-A416 lock washer, that is cut slightly down on the O.D. with your favorite metal sheers

Using your favorite pliers, secure the circlip in the groove

Using your favorite AN960-416 washers and AN936-A416 lock washers, slide on one flat washer, one lock washer, one flat washer, one lock washer and keep doing that until the shaft is almost filled up. Leave approx. 1/8" of the shaft free.

Secure the washers on the shaft the Jacko way; just beat it! - Your favorite hammer will be suitable for this purpose.

Bend the upper part of the shaft to your favorite shape

DONE! You now have what will very soon become your favorite favorite! It is even better than the modified tongue depression and I, for one, haven´t had more fun since my mum in law broke her leg!

NOTE 1: The lock washers between the flat washers is a must! If they are not
there, your new airbubble roller is a onetimer, because of the gooeyty of the epoxy. You simply can´t clean the roller because the plain washers will stick together so the acetone can´t get in between and do its job!

NOTE 2: This is one place where automotive parts could be used without significant risk!

NOTE 3: Spend 5 minutes making this tool and the quality of your layups will improve dramatically! Besides, it might save you enough time to remove the pink paint stains from your stairway.

Best regards
Tim Jorgensen
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