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Flush Mount Installation

Old 07-30-2013, 11:41 AM
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Default Flush Mount Installation

I need a little help with a new electronics install on my Edgewater. I am replacing an existing flush mounted depth sounder with a Garmin 740S. The new hole is about 1.5 inches wider than the old one. What is the best way to cut out the fiberglass? Is a jig saw the answer or should I use an oscillating tool?

Thanks.
Old 07-30-2013, 12:52 PM
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Two options work well:

1. Jig saw with appropriate saw blade for cutting fiberglass.
2. Rotary tool (Dremel) with cutting bit.

Put masking tape where you need to cut to keep from chipping the gel coat.
Old 07-30-2013, 12:59 PM
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Depending on how the surrounding area is affected by other electronics or ''lips'' on the edge of the dash, etc. will usually determine the tool. I have had to use a sawzall or an air powered cutoff tool for some applications due to constraints.

Take your time, tape as mentioned above and measure twice!!
Old 07-30-2013, 06:49 PM
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Jig saw and the template that comes with it uses a drill for the rounded corners.
Old 07-31-2013, 12:04 PM
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Hardly a professional video, but this should get you started

Old 07-31-2013, 03:11 PM
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If you have the space use a jig saw and a drill for the corners as mentioned earlier. Rotozips or Dremels will run away from you fast.....trust me. Watch the vid too, good tips on that re using tape, etc.
Old 08-01-2013, 11:03 AM
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Thank you for the feedback. The drill and jig saw combination seems like a controllable solution. The idea of freehanding a dremel or a rotozip sounded like it could be a real mess.
Old 08-04-2013, 04:37 AM
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I like the rotozip with the flat router base on it and a cutting bit. Using the flat base keeps it from getting away from me while cutting. Actually have a flat router base for the dremel also. Allows for great control

Last edited by dpcarson; 08-04-2013 at 04:37 AM. Reason: actually have a flat router base for the dremel also. Allows for great control.
Old 08-04-2013, 06:26 AM
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Dremel in one hand and a shop vac in the other!!!!
Old 08-04-2013, 07:06 AM
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A small trim router with a collet and a 1/2" plywood template are fool proof.







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