Why a spring for a hole saw?
 

I bought a USB charging jack designed for a car's dashboard, and
designed to fit in the same size hole as a cigarette lighter.

Many versions for sale. This one, no more expensive than the others,
came with a hole saw for 1 1/16", a size I don't have**. The hole saw
has the shank, the center drill bit, an allen wrench, the hole saw
itself, and a spring!!!

A tapered coil spring whose small diameter just fits the bit. Is that a
coincidence? What is the point of the spring? I've used a hole saw
before and didnt' feel a need for a spring. Is it to force out the hole
after it's been cut? Have you seen this before?




**Last time, I think I used a 1" hole saw and a reamer to make the hole
bigger. Now I can't find my reamer and NO ONE sells a reamer that big.
How can that be? I don't remember where I bougth the one I have, but I
think it was a yard sale or hamfest, not retail. It's metal with a
yellowish top and an unevenly applied vinyl overlay for the top. Where
can I get another one?

Why a spring for a hole saw?
 

On Monday, April 5, 2021 at 12:06:35 PM UTC-5, micky wrote:
I bought a USB charging jack designed for a car's dashboard, and
designed to fit in the same size hole as a cigarette lighter.

Many versions for sale. This one, no more expensive than the others,
came with a hole saw for 1 1/16", a size I don't have**. The hole saw
has the shank, the center drill bit, an allen wrench, the hole saw
itself, and a spring!!!

A tapered coil spring whose small diameter just fits the bit. Is that a
coincidence? What is the point of the spring? I've used a hole saw
before and didnt' feel a need for a spring. Is it to force out the hole
after it's been cut? Have you seen this before?


https://www.wonkeedonkeetools.co.uk/holesaws/what-are-the-parts-of-a-hole-saw

Why a spring for a hole saw?
 

Is it to force out the hole after it's been cut?


Yep.
John T.

Why a spring for a hole saw?
 

On Mon, 05 Apr 2021 13:06:17 -0400, micky posted for all of us to digest...


**Last time, I think I used a 1" hole saw and a reamer to make the hole
bigger. Now I can't find my reamer and NO ONE sells a reamer that big.
How can that be? I don't remember where I bougth the one I have, but I
think it was a yard sale or hamfest, not retail. It's metal with a
yellowish top and an unevenly applied vinyl overlay for the top. Where
can I get another one?


https://duckduckgo.com/?t=ffsb&q=reamers&ia=web

--
Tekkie

Why a spring for a hole saw?
 

In alt.home.repair, on Mon, 5 Apr 2021 16:09:01 -0400, Tekkie©
wrote:


On Mon, 05 Apr 2021 13:06:17 -0400, micky posted for all of us to digest...


**Last time, I think I used a 1" hole saw and a reamer to make the hole
bigger. Now I can't find my reamer and NO ONE sells a reamer that big.
How can that be? I don't remember where I bougth the one I have, but I
think it was a yard sale or hamfest, not retail. It's metal with a
yellowish top and an unevenly applied vinyl overlay for the top. Where
can I get another one?


https://duckduckgo.com/?t=ffsb&q=reamers&ia=web

I'd already thought to google, and duckduck results are about the same.

Here's a visual page:
https://duckduckgo.com/?t=ffsb&q=rea...ng&ia=shopping

There are only three bigger than an inch. One is made out of wood for
reaming citrus fruit
https://www.webstaurantstore.com/fra...r/2082218.html
adn this set for $307
https://www.travers.com/adjustable-b.../p/04-150-903/
and maybe this one for $435.

The 2nd and 3rd are straight reamers and I don't know how that would
work. If it goes in the hole, how can it ream, and if it won't go in
the hole, how can it ream. Oh, here it is,
"Blades are adjusted by loosening one nut and tightening the other
Each reamer expands to the next size"

Good for precise work but a nuisance for what I want, not to mention the
price.

Tapered reamers seem the way to go, what I have somewwhere in the house.

Why a spring for a hole saw?
 

In alt.home.repair, on Mon, 5 Apr 2021 10:16:18 -0700 (PDT), Dean
Hoffman wrote:

On Monday, April 5, 2021 at 12:06:35 PM UTC-5, micky wrote:
I bought a USB charging jack designed for a car's dashboard, and
designed to fit in the same size hole as a cigarette lighter.

Many versions for sale. This one, no more expensive than the others,
came with a hole saw for 1 1/16", a size I don't have**. The hole saw
has the shank, the center drill bit, an allen wrench, the hole saw
itself, and a spring!!!

A tapered coil spring whose small diameter just fits the bit. Is that a
coincidence? What is the point of the spring? I've used a hole saw
before and didnt' feel a need for a spring. Is it to force out the hole
after it's been cut? Have you seen this before?


https://www.wonkeedonkeetools.co.uk/holesaws/what-are-the-parts-of-a-hole-saw


This one doesn't have slots. I'll see if the spring is too strong or
not in a day or two, when I drill the hole.

Thanks all.

Why a spring for a hole saw?
 

On Tue, 06 Apr 2021 00:40:15 -0400, micky posted for all of us to digest...

Tapered reamers seem the way to go, what I have somewwhere in the house.


I feel you about "somewhere in the house"

--
Tekkie

Why a spring for a hole saw?
 

In alt.home.repair, on Tue, 06 Apr 2021 00:41:11 -0400, micky
wrote:

In alt.home.repair, on Mon, 5 Apr 2021 10:16:18 -0700 (PDT), Dean
Hoffman wrote:

On Monday, April 5, 2021 at 12:06:35 PM UTC-5, micky wrote:
I bought a USB charging jack designed for a car's dashboard, and
designed to fit in the same size hole as a cigarette lighter.

Many versions for sale. This one, no more expensive than the others,
came with a hole saw for 1 1/16", a size I don't have**. The hole saw
has the shank, the center drill bit, an allen wrench, the hole saw
itself, and a spring!!!

A tapered coil spring whose small diameter just fits the bit. Is that a
coincidence? What is the point of the spring? I've used a hole saw
before and didnt' feel a need for a spring. Is it to force out the hole
after it's been cut? Have you seen this before?


https://www.wonkeedonkeetools.co.uk/holesaws/what-are-the-parts-of-a-hole-saw


This one doesn't have slots. I'll see if the spring is too strong or
not in a day or two, when I drill the hole.

Thanks all.

Well, I was a little taken aback by the spring. I knew it was there but
I still didn't understand at first what was pushing back. i thought it
was the rubber mat glued to the other side of the plastic.

But when I was done, the spring did not force the cut-circle out of the
saw. Becaue the spring itself cut a hole in the plastic. Twice the
size of the bit in the middle, but smaller than the 1.1" hole saw. So
the spring poked through the hole it made and the "plug" stayed in hole
saw. It might work better with something other than 1/8" plastic.

Why a spring for a hole saw?
 

On Thu, 08 Apr 2021 21:32:46 -0400, micky
wrote:

In alt.home.repair, on Tue, 06 Apr 2021 00:41:11 -0400, micky
wrote:

In alt.home.repair, on Mon, 5 Apr 2021 10:16:18 -0700 (PDT), Dean
Hoffman wrote:

On Monday, April 5, 2021 at 12:06:35 PM UTC-5, micky wrote:
I bought a USB charging jack designed for a car's dashboard, and
designed to fit in the same size hole as a cigarette lighter.

Many versions for sale. This one, no more expensive than the others,
came with a hole saw for 1 1/16", a size I don't have**. The hole saw
has the shank, the center drill bit, an allen wrench, the hole saw
itself, and a spring!!!

A tapered coil spring whose small diameter just fits the bit. Is that a
coincidence? What is the point of the spring? I've used a hole saw
before and didnt' feel a need for a spring. Is it to force out the hole
after it's been cut? Have you seen this before?


https://www.wonkeedonkeetools.co.uk/holesaws/what-are-the-parts-of-a-hole-saw


This one doesn't have slots. I'll see if the spring is too strong or
not in a day or two, when I drill the hole.

Thanks all.

Well, I was a little taken aback by the spring. I knew it was there but
I still didn't understand at first what was pushing back. i thought it
was the rubber mat glued to the other side of the plastic.

But when I was done, the spring did not force the cut-circle out of the
saw. Becaue the spring itself cut a hole in the plastic. Twice the
size of the bit in the middle, but smaller than the 1.1" hole saw. So
the spring poked through the hole it made and the "plug" stayed in hole
saw. It might work better with something other than 1/8" plastic.


Cutting plastic use a "fender washer" just smaller than the hole with
a center hole big enough for the pilot drill