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-   -   Advice re drilling 45mm dia hole JOB DONE! (https://forums.motorhomefacts.com/49-tech-mech-chat/26098-advice-re-drilling-45mm-dia-hole-job-done.html)

tokkalosh 25-07-2007 11:37

Advice re drilling 45mm dia hole JOB DONE!
 
I have just purchased a Status 530/5 TV antenna & mast.

Now I need to fit it.
I need advice on what to drill the hole with please.
Used to have a 'hole drill' but, in my opinion, it was a bit vicious to use on the motorhome roof.

Suggestions please.

TIA

olley 25-07-2007 11:42

Hi thats what I would use, make sure its sharp and the drill bit is as well, run it at a slow speed and it should be ok.

I used a 32mm one to fit mine and stew's Maxview dish.

Olley

vicdicdoc 25-07-2007 11:45

IMO use a small dia drill bit to make 15 or 20 holes just inside the required dia and then use either a round or half round file to 'ease' the hole to the exact size . . a slower process but better [be exact - you only get one chance !

zaskar 25-07-2007 11:51

Quote:

Originally Posted by olley
Hi thats what I would use, make sure its sharp and the drill bit is as well, run it at a slow speed and it should be ok.
I used a 32mm one to fit mine and stew's Maxview dish.
Olley


Sorry Olley, disagree (partially :D ) there.

Yes, make sure the drill bit and cutter are VERY sharp.
But...... NO, do not use slow speed when drilling a hole through THIN alluminium material.
Your roof will probably be 20swg (.036"/0.09mm) alluminium skin (or there abouts).
If you drill slowly through this material, odds on, as the teeth break through the other side, they will grab and rip the ally, ESPECIALLY if you apply too great a pressure.
Use a VERY fast speed and VERY light pressure and allow the cutter to take itself through the ally. This way you'll get a much neater finish and less chance of grabbing.
..........least, thats how we build aircraft :D

mangothemadmonk 25-07-2007 11:52

I would use the correct size hole cutter like these...

http://www.screwfix.com/app/sfd/cat/...37704&ts=60709

Johnny F

olley 25-07-2007 11:55

Hi Zaskar, I bow to your greater knowledge of drilling ali. :lol: Never found much of that on Dockside equipment.

Olley

zaskar 25-07-2007 12:00

Quote:

Originally Posted by olley
Hi Zaskar, I bow to your greater knowledge of drilling ali. :lol: Never found much of that on Dockside equipment.

Olley


Dont worry mate, 20 odd years of the aircraft industry turns one into a Grade "A" anorach! :oops: :D
besides...........
if I wanted any advice on that witchcraft stuff called electrics, YOU'D be one of the first people I shout :D

Waleem 25-07-2007 12:06

If it's going on to a VW Clubman, surely they are drilling fibreglass ?
:?

tokkalosh 25-07-2007 12:12

Thanks for all the advice so far.

Monocoque construction roof.

Did check Screwfix but they don't do a 45 mm one unfortunately.

Keep it coming :wink:

olley 25-07-2007 12:19

Hi tricia, if you use jonnyf's link they show a 44mm which would be close enough I am sure.

Olley


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