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ZeDefender



Member Since: 15 Sep 2011
Location: Munich
Posts: 4731

Germany 2011 Defender 110 Puma 2.4 SW Baltic Blue
DIY (Defend It Yourself) advice please...
I consider myself quite handy at most things but I am humble (and clever) enough to know I can always learn. So here's my question:

I just got some Safari security grilles for rear windows of the 110 (thanks again Leeds) and I'm about to brave the elements and fit them Very Happy
Normally I would just drill through the skin using the holes in the mounting brackets as a guide. However, the grilles are steel and I don't want to damage the powder coating inside the holes before I rivet them on i.e. bare steel + aluminium rivet = Shocked

Any suggestions for a reliable way of marking/drilling the holes without damaging the grilles? Usually when I mark/drill, holes tend to be "a bit off" Sad

I'm sure there is probably an obvious/clever solution and this seems like a good place to ask Thumbs Up

Also, the mounting brackets have holes on one side (top/bottom) and slots on the other. Is there a particular reason?

Cheers
Matt Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...


Last edited by ZeDefender on 27th Dec 2011 6:48pm. Edited 1 time in total
Post #110244 27th Dec 2011 6:43pm
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T1G UP



Member Since: 08 Dec 2009
Location: Bath
Posts: 3101

England 2011 Defender 110 Puma 2.4 XS CSW Orkney Grey
masking tape the area so you don't scratch anything. line up the grills and with a pen mark the holes, remove the grill and drill, remove tape, inset rivnet and fit!
Post #110245 27th Dec 2011 6:48pm
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ZeDefender



Member Since: 15 Sep 2011
Location: Munich
Posts: 4731

Germany 2011 Defender 110 Puma 2.4 SW Baltic Blue
T1G UP wrote:
masking tape the area so you don't scratch anything. line up the grills and with a pen mark the holes, remove the grill and drill, remove tape, inset rivnet and fit!

Never seem to get the marking right (God knows I try!) - do you just put a dot in the middle of the hole or draw round the rim)?
I know it seems a daft question but if I cock up even a bit, I'll have a leaky skin... Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...
Post #110246 27th Dec 2011 6:50pm
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T1G UP



Member Since: 08 Dec 2009
Location: Bath
Posts: 3101

England 2011 Defender 110 Puma 2.4 XS CSW Orkney Grey
ZeDefender wrote:
T1G UP wrote:
masking tape the area so you don't scratch anything. line up the grills and with a pen mark the holes, remove the grill and drill, remove tape, inset rivnet and fit!

Never seem to get the marking right (God knows I try!) - do you just put a dot in the middle of the hole or draw round the rim)?


well it depends on the size of the hole to the size of the pen! either way the middles best.

get someone else to hold it still
Post #110248 27th Dec 2011 6:52pm
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ZeDefender



Member Since: 15 Sep 2011
Location: Munich
Posts: 4731

Germany 2011 Defender 110 Puma 2.4 SW Baltic Blue
Cheers.
Any idea why there are slots on one side and holes on the other? I thought it might be to allow for vertical error, although that would suggest drilling inaccuracy which could also make horizontal error Sad Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...
Post #110249 27th Dec 2011 6:56pm
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bm52



Member Since: 04 Apr 2010
Location: Kent
Posts: 2189

United Kingdom 2014 Defender 110 Puma 2.2 XS CSW Havana
apologies if you know this, don't mean to be patronising or teach the preverbial grandmother to suck eggs........can i suggest that after you have marked up the drill holes you use a centre punch [or large nail] to 'mark' where you want to drill as it will help the drill bit bite, also use a smaller drill bit as a pilot hole before you use the correct size drill bit.

good luck BM52
Post #110251 27th Dec 2011 6:58pm
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ZeDefender



Member Since: 15 Sep 2011
Location: Munich
Posts: 4731

Germany 2011 Defender 110 Puma 2.4 SW Baltic Blue
Embarassed Didn't think of that - usually drill pilots and upsize just for large holes (e.g. through plate).
At least if I drill really small pilots I can place the grills back on to see if I'm about to screw up really badly Thumbs Up
Cheers all
Matt Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...
Post #110252 27th Dec 2011 7:02pm
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K9F



Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
If you 'wet assembly' the rivnuts (by using Sikaflex or another suitable sealant) it will not matter if the paintwork is damaged. If the air can't get to it it won't corrode. With Sikaflex the excess can be cleaned off straight away using turps substitute or white spirit. Thumbs Up Just a tip! If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!
Post #110255 27th Dec 2011 7:17pm
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ZeDefender



Member Since: 15 Sep 2011
Location: Munich
Posts: 4731

Germany 2011 Defender 110 Puma 2.4 SW Baltic Blue
K9F wrote:
If you 'wet assembly' the rivnuts (by using Sikaflex or another suitable sealant) it will not matter if the paintwork is damaged. If the air can't get to it it won't corrode. With Sikaflex the excess can be cleaned off straight away using turps substitute or white spirit. Thumbs Up Just a tip!

Cheers Thumbs Up
Think I'm all set Very Happy Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...
Post #110292 27th Dec 2011 9:45pm
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ickle



Member Since: 22 Jul 2010
Location: South Vendee
Posts: 1777

France 2008 Defender 110 Puma 2.4 CSW Alpine White
On the grandmother sucking eggs line, use masking tape to stop a drill wandering on a panel, if you centre pop a panel (as advised in LRO a while back) you will get ripples and circular dints in the panel - might get away with it around the window frame as the panel is narrow, but a sharp drill and tape is better....

Keith
Post #110300 27th Dec 2011 10:36pm
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T1G UP



Member Since: 08 Dec 2009
Location: Bath
Posts: 3101

England 2011 Defender 110 Puma 2.4 XS CSW Orkney Grey
ickle wrote:
On the grandmother sucking eggs line, use masking tape to stop a drill wandering on a panel, if you centre pop a panel (as advised in LRO a while back) you will get ripples and circular dints in the panel - might get away with it around the window frame as the panel is narrow, but a sharp drill and tape is better....

Keith


exactly.
Post #110308 27th Dec 2011 11:28pm
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ZeDefender



Member Since: 15 Sep 2011
Location: Munich
Posts: 4731

Germany 2011 Defender 110 Puma 2.4 SW Baltic Blue
Thumbs Up Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing...
Post #110310 27th Dec 2011 11:54pm
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