To cut a cowl I use the following items:

- Adhesive tape & paper ( as per Missleman )
- Drywall Side cut bit used in hand held dremel.
- Small and medium Dremel Sanding drums
- Hand/Finger drills
- Panel Line marker Pen
- Alcohol to remove the Panel Line Marker lines later.
- Dust mask.
- Shop vac running just next to where cut is being made.

Usually I position the shop vac nozzle inches from the cowl to catch the fiberglass material.

I use a hand/finger drill to drill through and start at the marks I have made with the panel line pen.

The side cut bit is used to enlarge the holes and clear out large areas.

The large sanding drum is used to finish off the larger holes, while the smaller drum for the small openings.

Work SLOOOWLY... check your work OFTEN...

I may take 2-4 hours to cut a cowl with several openings, etc. but the results are worth the time.

After the cowl is cut I usually apply thin CA on the inside of the cut areas to prevent the fiberglass from cracking and to help harden it.