RecMech

Standing mile car requires roof rails over 200 mph.

I am using 3/4" aluminum angle, but need to fasten it to the roof panel.
Has anyone drilled the transparent plastic panel? Will it spider crack?

I have thought about epoxy, but would feel better for the next guy down the track if they were bolted in some fashion.

Thanks.

StKnoWhere

No problem but follow precautions for drilling polycarbonate. (Pg 18)
http://www.theplasticshop.co.uk/plas...sing_guide.pdf


• The drill hole must be cleared frequently to prevent swarf build-up and excessive frictional heat.
• The drill must be raised from the hole frequently and cooled with compressed air.
• The sheet or product must be adequately clamped and supported to reduce vibration and ensure a correctly sized hole.
• Holes should not be drilled closer to the edge of the sheet than 1-1.5 times the diameter of the hole.
• All holes must be larger than the bolt, screw or fixing to allow for thermal expansion and contraction.
• For long production runs the use of carbide- tipped twist drills is recommended.