Drilling plastic solar panel corner brackets

Discussion in 'Solar Power' started by Flamenca, Apr 18, 2016.

  1. Flamenca

    Flamenca Funster Life Member

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    I have opted to fit panels on my roof using plastic corner brackets. The brackets arrived today and I am quite surprised that they are made of very rigid/brittle plastic. I am wondering the best way of drilling the holes required without cracking or shattering the plastic. Am I being overly cautious? All recommendations welcome.
     
  2. Lenny HB

    Lenny HB Funster

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    They normally come with holes to mount the panel you shouldn't need any more holes.
    Plastic is easy to drill just make you use a good quality drill & medium speed.
     
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  3. Flamenca

    Flamenca Funster Life Member

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    Unfortunately, the brackets I bought on Amazon did not come pre-drilled.
     
  4. Boringfrog

    Boringfrog Funster

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    Obviously not these then? Thought they all had holes pre drilled? Screenshot_2016-04-18-20-23-11.png
     
  5. Lenny HB

    Lenny HB Funster

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    Don't come with anything "Currently unavailable ":ROFLMAO:
     
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  6. Flamenca

    Flamenca Funster Life Member

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    @Boringfrog I bought them from a different supplier on Amazon. They look identical to the ones you show but no holes pre-drilled :(
     
  7. Techno

    Techno Funster Life Member

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    The recesses for the holes look too near the corner in my view and the drill will hit the steel reinforcements within the panel corners.
    I use Aluminium
    [​IMG]
     
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  8. Boringfrog

    Boringfrog Funster

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    I would drill with a small 2mm bit 1st then use the correct size for the bolts you're using. Are they curved like the photo too?
     
  9. chaser

    chaser Funster

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    I'd get some silkaflex and stick em down(y)
     
  10. Terry

    Terry Funster

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    May I suggest you simply stick them on your van IE no drilling -Mighty strength grip and grab -made by Siroflex is great stuff(y)(y)(y) but takes a bit of finding -Also Puraflex 40 (y)from toolstation is very good for both sticking and sealing
    terry
     
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  11. Flamenca

    Flamenca Funster Life Member

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    Yes, identical to the ones in your photo. As you suggest, I will drill pilot holes initially.
     
  12. Techno

    Techno Funster Life Member

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    He means to fix the bracket to the panel Terry not to fix to the van
     
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  13. Flamenca

    Flamenca Funster Life Member

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    Fortunately, or possibly unfortunately, there are no steel reinforcements within the corners on my panels. They are cheap ones from China.
     
  14. Techno

    Techno Funster Life Member

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    Not that you can see but yes there are inside the aluminium which is hollow double skinned
     
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  15. John Laidler

    John Laidler Funster

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    Make sure the plastic is warm, not cold and brittle. Keep overnight in a warm place prior to fitting should do it.

    And buy new drill bits, especially if you have to drill through the corners which as suggested are likely to be solid. It can be done, I've done it. The screw nearest the camera on the far panel in this shot goes through the corner reinforcing and I have used an M5 bolt there.
    OI000043.jpg
     
    Last edited: Apr 18, 2016
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  16. Xabia

    Xabia Funster

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    Like Techno I used aluminium angle - I didn't want the panel flying off the roof!
     
  17. Techno

    Techno Funster Life Member

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    Rivets mean no shaking loose

    image.jpeg
     
  18. Techno

    Techno Funster Life Member

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    See the rivet is inside the double skin
    and you can just see one of the indent marks that crimps the aluminium to the internal corner joiner
    image.jpeg
     
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  19. Techno

    Techno Funster Life Member

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    Be sure to use a course grit sandpaper on the base of those brackets before applying adhesive
     
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  20. activecampers

    activecampers Read Only Funster

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    I've got the same brackets in black, and plan to use 2x corners and 2x straight bits. As you, neither have pre drilled holes.
     
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