Splitboard.com Forums

The World's first exclusive splitboard discussion forums






It is currently Sun Nov 23, 2014 3:00 am

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 12 posts ] 
Author Message
 Post subject: Inches to mm drillbits?
PostPosted: Wed Apr 04, 2012 6:48 am 
Offline

Joined: Sun Jan 15, 2012 2:25 pm
Posts: 74
Location: Bergen (Norway)
I have a voile diy kit. The tool list shows drill bit and wood paddle bits in inches I think.
Are there a direct mm convertion? Or do I need to source down some new drillbits?
Thanx


Top
 Profile  
 
 Post subject: Re: Inches to mm drillbits?
PostPosted: Wed Apr 04, 2012 7:03 am 
Offline
User avatar

Joined: Wed Oct 28, 2009 10:03 am
Posts: 312
You can usually get it pretty close with metric sizing. I don't recall there being any holes in the DIY convrsion that require total precision.

Jsut make sure you get the puck spacing correct!


Top
 Profile  
 
 Post subject: Re: Inches to mm drillbits?
PostPosted: Wed Apr 04, 2012 7:13 am 
Offline
User avatar

Joined: Fri Jan 15, 2010 2:01 pm
Posts: 800
Location: Colorado
Try to find a Forstner bit if you can, they work better than paddle bits....

Image

_________________
Talking about snowboarding is like dancing about architecture...


Top
 Profile  
 
 Post subject: Re: Inches to mm drillbits?
PostPosted: Wed Apr 04, 2012 11:42 am 
Offline

Joined: Sun Jan 15, 2012 2:25 pm
Posts: 74
Location: Bergen (Norway)
Thanx for the frostner bit tip!
Anyone willing to take a shot at converting this to the closest metric?
Drill Bits:
1/8”, 3/16”, 19/64”
3/4” Wood Paddle Bit
3/8” Countersink Bit
3/8” Nut Driver


Top
 Profile  
 
 Post subject: Re: Inches to mm drillbits?
PostPosted: Wed Apr 04, 2012 2:26 pm 
Offline
User avatar

Joined: Wed Feb 29, 2012 9:48 am
Posts: 220
Location: Sydney
1/8= 3.175mm
3/16= 4.7625mm
19/64= 7.540mm
3/4= 19.05mm
3/8= 9.525mm

1" is 25.4mm


Top
 Profile  
 
 Post subject: Re: Inches to mm drillbits?
PostPosted: Thu Apr 05, 2012 1:36 am 
Offline
User avatar

Joined: Thu May 19, 2011 3:17 am
Posts: 109
Location: Alba-Ecosse-Scotland!!
I used a 7.5mm bit for all the T-bolt holes, a 20mm router type bit for countersinking on the base and a 5mm bit for the nose/tail clips and hooks.

Used these bits for two boards with everything working out perfectly..........so far :lol:

Hope that's of some help

George

_________________
https://www.facebook.com/PooderChooks


Top
 Profile  
 
 Post subject: Re: Inches to mm drillbits?
PostPosted: Thu Apr 05, 2012 3:06 am 
Offline

Joined: Sun Jan 15, 2012 2:25 pm
Posts: 74
Location: Bergen (Norway)
Big help guys! I knew the inch to mm was 25,4. But i'm lost when there is a slash in between :D


Top
 Profile  
 
 Post subject: Re: Inches to mm drillbits?
PostPosted: Thu Apr 05, 2012 3:13 am 
Offline
User avatar

Joined: Wed Feb 29, 2012 9:48 am
Posts: 220
Location: Sydney
To work it out do this. Say you need 3/64" this is the formula.
25.4 divided by 64 =0.396875.
0.396875 x 3 = 1.190625

So divide 25.4 by the second number, then multiply by the first number.


Top
 Profile  
 
 Post subject: Re: Inches to mm drillbits?
PostPosted: Thu Apr 05, 2012 8:20 am 
Offline
User avatar

Joined: Mon Dec 22, 2008 6:35 pm
Posts: 316
Location: Ithaca, NY
I use Google for just about all my conversions. It's a pretty flexible calculator which also includes many useful physical constants.

So for 3/8" to mm you can do: https://www.google.com/search?q=%283%2F8+inches%29+to+mm&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

You can do much more sophisticated calculations too just be sure to go heavy on the parenthesis. So another fun one is the average cost of driving your car per mile. So I calculate average gas mileage and then the cost per gallon of fuel: https://www.google.com/search?q=%28320+miles%29%2F%2812+gallons%29*%281+gallon%29%2F%284.04+USD%29+in+%28miles%2FUSD%29&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a

Here's a short guide to it:
http://www.googleguide.com/help/calculator.html

and a bit longer:
http://www.googleguide.com/calculator.html

Hope this helps!


Top
 Profile  
 
 Post subject: Re: Inches to mm drillbits?
PostPosted: Thu Apr 05, 2012 8:22 am 
Offline

Joined: Sun Jan 15, 2012 2:25 pm
Posts: 74
Location: Bergen (Norway)
Thanx again! I am stoked with the will to help! :headbang:
I have the drillbits I need, and I found a bit that looks like the frostner bit. Says on the description that it does leave a clean and exact hole... Cost just a few bucks.
Image

So the only piece I am missing is the countersink bit. When googling it, it looks like it has a pointy edge. Why cant I just use a normal wood drill bit? Just go a bit down so the allen head of the chinese hook bolts are sunk in? Doesnt look like the countersink bit will leave a flat surface?


Top
 Profile  
 
 Post subject: Re: Inches to mm drillbits?
PostPosted: Thu Apr 05, 2012 8:29 am 
Offline
User avatar

Joined: Mon Dec 22, 2008 6:35 pm
Posts: 316
Location: Ithaca, NY
A countersink bit drills the correct angle for a flat head screw to seat into.

A normal twist drill bit has a different angle and you will find that the flat head screw will not seat correctly.

Here's an image example of what I mean exactly
Image

and here's a short summary on screw head types.

http://www.eaglefastener.net/technical/screw-head-styles.html

Hope this helps!


Top
 Profile  
 
 Post subject: Re: Inches to mm drillbits?
PostPosted: Thu Apr 05, 2012 8:34 am 
Offline
User avatar

Joined: Thu May 19, 2011 3:17 am
Posts: 109
Location: Alba-Ecosse-Scotland!!
^^^Nice info!!

This is the bit I used
Image

It works pretty well, just watch how deep you go!!Remember the T-Bolt will sink in to the core very slightly.
Image

George

_________________
https://www.facebook.com/PooderChooks


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 12 posts ] 

All times are UTC - 8 hours [ DST ]


Who is online

Users browsing this forum: Yahoo [Bot] and 8 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  





Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group