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3.5x9.5 vs 3.6x9.5 Drill bit

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b_in_subtle
Posts: 143 - Karma: 837
So basically I have a 3.5x9.5 bit from a mount, most skis I notice have a rec bit of 3.6x9.5.

I want to know if I can just use the 3.5 interchangeably with a 3.6. I’m pretty sure most drills hand drills aren’t precise within 0.1mm either way.

Any techs out there who want to chime in?

**This thread was edited on Dec 7th 2022 at 4:04:46pm
Dec 7 2022 4:02PM
1 0
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kalle.
Posts: 767 - Karma: 4,861
i say you’ll be golden with the 3.5 bit. remember to clean the holes well!
Dec 7 2022 4:07PM
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profa_212
Posts: 9015 - Karma: 37,539
you will probably be fine. But personally, I would just spend the 10 bucks and get the correct size
Dec 7 2022 4:25PM
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BradFiAusNzCoCa
Posts: 7263 - Karma: 64,134
You’re golden. Only when you go to 4,1 is it really a difference. 4,1 is for skis with metal
Dec 7 2022 5:17PM
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FaunaSkis
Posts: 611 - Karma: 6,611
don’t worry about 0.1mm smaller hole, the drill will overdrill the hole size a bit anyway.

Definitely clear the debris from the hole, compressed air does it best.

if you’re wanting to do an optimum mount you should tap the holes with a #12AB tap.
Dec 7 2022 5:33PM
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