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Non-Gun DIY Projects and Customizations This section is for your DIY spearfishing projects and customization other then spearguns.

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Old 10-16-2012, 03:42 PM   #1
ahoullis
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what are these drillbits called/for specificaly

I have a couple of these bits the one on the right is a normal twist bit but the one on the left is a bit different, it has really wide spirals i think to complete turns down the entire lenght of the bit, just wondering if there are for a specific material wood, drywall?idk what are they called
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Old 10-17-2012, 09:00 PM   #2
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Re: what are these drillbits called/for specificaly

There for stringy materials like aluminum and some plastics
Fast helix helps pull the swarth up
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Old 10-17-2012, 09:59 PM   #3
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Re: what are these drillbits called/for specificaly

looks like a plastic drill bit . it wont pull in and crack the plastic
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Old 10-17-2012, 10:29 PM   #4
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Re: what are these drillbits called/for specificaly

No way that's a plastic bit, plastic bits have a much steeper tip(cutting) angle to to prevent pulling up brittle materials such as plastic. See true plastic bit pic...
My guess would be for very soft materials, but that just a guess.
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Old 11-02-2012, 12:14 AM   #5
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Re: what are these drillbits called/for specificaly

Quote:
Originally Posted by ahoullis View Post
I have a couple of these bits the one on the right is a normal twist bit but the one on the left is a bit different, it has really wide spirals i think to complete turns down the entire lenght of the bit, just wondering if there are for a specific material wood, drywall?idk what are they called
The drill bit with the slow spiral is for drilling brass or bronze, unless it has a carbide tip.
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Old 11-02-2012, 09:50 AM   #6
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Re: what are these drillbits called/for specificaly

I think they are Used for drilling holes into peoples heads...
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Old 11-02-2012, 04:11 PM   #7
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Re: what are these drillbits called/for specificaly

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I think they are Used for drilling holes into peoples heads...
That's probably it.
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Old 11-05-2012, 04:48 PM   #8
Teufel-Hundin
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Re: what are these drillbits called/for specificaly

Thats a drywall bit it cuts sideways you use it in a rotary tool.
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Old 10-20-2021, 03:54 PM   #9
Markusfugit
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Re: what are these drillbits called/for specificaly

If it's made of carbide and is 1/4", it is likely and upcut spiral router bit....?
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Old 10-22-2021, 03:48 AM   #10
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Re: what are these drillbits called/for specificaly

If the bit is carbide it's for concrete, I have several. You drill a hole in morter and imsert a plastic piece in hole and use a screw in plastic to mount things. The screw expands the plastic. Pictured is 1/4 inch, different sizes are available.

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