type of drill bit to drill 7/8" hole. - Ford Transit USA Forum
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Old 03-26-2019, 08:06:PM Thread Starter
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type of drill bit to drill 7/8" hole.

I've heard the that hardened steal used in the Transit is hard to drill through. I bought a regular "bi metal" hole bit but the antenna instructions look like they're using a diamond "tile" drill bit. Do you guys have any suggestions?

I could try the metal bit and if it doesn't work go buy a diamond bit. It probably won't hurt anything….on the other hand I should ask first.

Thanks, Jon
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Old 03-26-2019, 08:15:PM
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Your speaking of Boron Steel. Its mainly just in the A & B pillars You'll need Tungsten Carbide to chew through it.
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Old 03-26-2019, 08:18:PM
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Here is what I would use.

https://www.homedepot.com/p/Klein-To...1875/202868661

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Old 03-26-2019, 08:31:PM
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Here is a Tungsten carbide version set.

https://www.zoro.com/greenlee-hole-c...55/i/G1904436/

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Old 03-26-2019, 09:33:PM
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As Inkog says, the hardened boron steel is in only part of the structure. If you're just mounting an antenna, it's likely that you won't be drilling through any of it. Standard high speed steel drills work fine on most of the van.

When drilling, you will get better results starting with a small drill and working your way up through increasing sizes. If you're drilling hardened steel, you want to drill at slow speed, around 250 rpm and cool the cut with cutting oil or water.

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Old 03-26-2019, 09:41:PM Thread Starter
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Thanks. I ordered a Tungsten Carbide Teeth Hole Cutter from Amazon. I had to order from my neighbor since they have one day free shipping.
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Old 03-27-2019, 12:35:AM
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If you're cutting thin sheet metal you want a step drill. Hole saws are fine in thicker stuff but can catch out an amateur in thin stock. Much can go wrong.
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Old 03-27-2019, 03:33:AM
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Quote:
Originally Posted by Campervan Man View Post
I've heard the that hardened steal used in the Transit is hard to drill through. I bought a regular "bi metal" hole bit but the antenna instructions look like they're using a diamond "tile" drill bit. Do you guys have any suggestions?

I could try the metal bit and if it doesn't work go buy a diamond bit. It probably won't hurt anything….on the other hand I should ask first.

Thanks, Jon

Are you mounting a transmitting antenna? (Ham or business band.) According to the Bemm there are only 2 places you can mount a transmitting antenna where it will not effect the vehicle electronics.

2016 transit cargo 250 MR, LWB, 3.5 eco, 3.31 limited slip
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Old 03-27-2019, 09:47:AM Thread Starter
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I am planning to mount an antenna. Just a small cellular mimo antenna so I can use a jet pack hotspot.

Now that I think about it my solar panel is installed almost over the small puck like antenna (nav/XM antenna?). My XM radio has a lot of dead spots so I probably should replace that antenna with a all in one tall one that's higher than my panel.

Suggestions?

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Last edited by Campervan Man; 03-27-2019 at 11:46:AM.
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Old 03-27-2019, 10:13:AM
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There was a thread awhile back about swapping out the XM antenna, I do not remember the details other then the guy was having a hard time finding a adapter for the antenna plug.

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