smo Posted February 20, 2008 Share Posted February 20, 2008 I want to fit some NAS lights to the 90, however as its a 200Tdi i need to enlarge the holes for the lights from approx 32mm to 42mm - obviously hole saws are out the question as there is nothing to centre it on - is it possible to get a cone drill or stepped drill that big?? Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted February 20, 2008 Share Posted February 20, 2008 A Q-Max punch would make a nice job of it. Quote Link to comment Share on other sites More sharing options...
smo Posted February 20, 2008 Author Share Posted February 20, 2008 A Q-Max punch would make a nice job of it. Nice one Mr Fridge, ideal and cheap too, thanks Quote Link to comment Share on other sites More sharing options...
mpb Posted February 20, 2008 Share Posted February 20, 2008 I want to fit some NAS lights to the 90, however as its a 200Tdi i need to enlarge the holes for the lights from approx 32mm to 42mm - obviously hole saws are out the question as there is nothing to centre it on - is it possible to get a cone drill or stepped drill that big?? I used a half round file to enlarge the holes when i fitted mine. For the extra fog & reversing light I used a hole saw. Stick a bit of paint on the bare metal when you've done it. Quote Link to comment Share on other sites More sharing options...
LandyManLuke Posted February 20, 2008 Share Posted February 20, 2008 q-max punch is the tool for the job. I've done similar with the air hacksaw - that works pretty well, much more labourious though. Quote Link to comment Share on other sites More sharing options...
Vanny Posted February 20, 2008 Share Posted February 20, 2008 bolt/clamp/glue a sheet of MDF infornt and behind the hole, get it lined up right and drill through the lot with a hole saw. Almost guaranteed to give you off set holes and a sore head. But probably the way i'd end up doing the job edit just had a look at the q-max punches; thats an absolutely cracking device! Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted February 21, 2008 Share Posted February 21, 2008 I used a half round file to enlarge the holes when i fitted mine. For the extra fog & reversing light I used a hole saw. Stick a bit of paint on the bare metal when you've done it. Or 2 pack araldite in a centre back in - and then hole saw to size ? Nige Quote Link to comment Share on other sites More sharing options...
Daan Posted February 21, 2008 Share Posted February 21, 2008 There is a special tool for this purpose, it is an arbor that can hold 2 holesaws, one size of the old hole, one size for the bigger hole, the smaller size acts as a guide. Here: http://www.starrett.co.uk/products/sawblad...ole-saws/Page6/ At the bottom of the page, the 'oops' specification. No picture unfortunately. I haven't got one myself, but have seen them used. Alternatively, you can use 2 discs that were cut out by the different sizes holesaw, bolt them together with a 1/4" bolt and nut, and use this as a guide for the holesaw, without the arbor drill. This is my cheaper, get out of trouble shortcut. Daan Quote Link to comment Share on other sites More sharing options...
Ivan Posted February 21, 2008 Share Posted February 21, 2008 I just bolted a piece of wood behind the existing holes and used that to get the cetre. HTH Ivan Quote Link to comment Share on other sites More sharing options...
clbarclay Posted February 23, 2008 Share Posted February 23, 2008 No picture unfortunately. http://www.wooddigest.com/print/Wood-Diges...ing/2$1010 Quote Link to comment Share on other sites More sharing options...
lrfarmer Posted February 23, 2008 Share Posted February 23, 2008 I use one of these fine on aly but i killed the drill using it on the bumper I got a set of these at christmas theres a 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16" & 1" the bigger one take a bit of holding if it bites. Quote Link to comment Share on other sites More sharing options...
landmannnn Posted February 23, 2008 Share Posted February 23, 2008 Plasma cutter. Not cheap but your life is not complete without one. Quote Link to comment Share on other sites More sharing options...
jimmy_neutron Posted February 24, 2008 Share Posted February 24, 2008 Plasma cutter. Not cheap but your life is not complete without one. I once worked in a place where the workshop had a plasma cutter... Nothing was complete after i'd discovered how much fun it was Quote Link to comment Share on other sites More sharing options...
PaulMc Posted February 24, 2008 Share Posted February 24, 2008 I've got one of those Starrett arbors, they're great for enlarging holes on the same centre, but for fitting NAS lamps you need to move the centre of the new larger hole. I used the bit of scrap wood technique to find the new centre for the Starrett cutter. My mate did his by fitting the NAS lamp plinth and using the hole in it's centre to guide the Starrett cutter. Paul. Quote Link to comment Share on other sites More sharing options...
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