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Sign Tray Finishing to increase strength of joins
We are producing a number of sign trays for one of our customers and want to ensure the panels are as solid as possible. We currently use Tiger Seal to hold together with "L" brackets every 500mm or so. Can anyone suggest a sealant which would be more effective than Tiger Seal or any alternative method of strengthening the panels?
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4 Replies
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We don’t use any additional items to make them more rigid as it would interfere with the installation. Use at least a 0.3mm skin material and get your depth just right any they’ll be fine. There is some debate as to the best cutter/groove to use.
‘V’, round or flat. I now use a 1/4" flat mill as this gives a pleasing radius to the corners rather than the sharp bend of a ‘V’.
Slight overbend and it relaxes to a nice 90degrees ready to slip over a pre-built frame or set of rails.If you need to add rigidity, bond some ‘scrap’ composite to the inside with VHB tape. Tiger seal is good although we use evo-stik ‘serious stuff’ as an alternative being cheaper and setting firmer.
Dave
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We get an external company to do our routering, I’m not sure what cutter they use to be honest. I will give the evo-stik a try and see what results we get, thanks for the tip.
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As David says – providing you use the correct material the bends are strong enough, but I have on occasion put a bead of two pack glue/hardener (Scotchweld structural adhesive) into the v groove to provide additional strengthening on a projecting sign with a 90 degree angle fitted indoors to prevent the sign from moving. You have to be careful though to ensure the bend is at a 90 degree angle as once the glue has set it can no longer be adjusted.
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We bonded aluminium angle inside on the returns to face, when we had deep returns, with VHB
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