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Old June 5th 21, 03:50 PM posted to rec.woodworking
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Default Save time cutting plywood

On 6/4/2021 10:28 AM, wrote:
On Thursday, June 3, 2021 at 1:48:47 PM UTC-5, Leon wrote:
On 6/3/2021 12:11 PM, wrote:
On Wednesday, May 19, 2021 at 11:15:16 PM UTC-5, Ed Pawlowski wrote:
A little trick that will save lots of time when you have more than one
sheet to cut

https://imgur.com/gallery/9Bz6KYk

Guessing that is a 10" table saw he is using. So it has about a 4" depth of cut.

Well that is nor right, for the vast majority of 10" table saws. 3" and
a bit over is the max I have ever seen. MY ICS SawStop cuts 3.125" deep.

So recalculate everything below. :!) 4 sheets max.


Went to the basement and measured my Delta Contractor saw. It has about a 3" depth of cut. I rarely if ever try to cut maximum depth so never even measured it until your comment. I guessed wrong on the depth of cut. 4 sheets max per cut. But I probably over estimated on the 7.25" circular saw too. It likely only cuts 2 sheets of plywood instead of 3. So some of my calculations may have been right after all. Ha! Better to be lucky than good or smart. Kind of like the guy in the video.




LOL, I think your circular saw estimate may have been correct. I fave
a Festool 75 track saw with an, IIRC, 8" blade that cuts to 75mm, and or
about 3". You should be able to cut 3, 3/4" sheets at once with a 7.25"
blade IF it has the power.




5 sheets of 3/4" plywood. A 7.25" circular saw has about a 2.5" depth
of cut. 3 sheets of 3/4" plywood. So he is able to cut 2 more sheets
with the upside down table saw than if he used a common circular saw.
It is an improvement in productivity. But enough to warrant the extra
effort? Looks like the stack of plywood he is cutting is about 3 feet
tall. About 50 sheets. So it will be 10 passes with his upside down
table saw compared to 17 passes with a circular saw. Worth it? Its
easier to push a circular saw than an upside down table saw. So I bet
the effort and time used for 10 upside down table saw passes will be
more than the 17 circular saw passes. So in the end its a negative from
a labor, production, perspective.

This chap needs to use his obvious and vastly superior mind to invent a new and better way to cut plywood.



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Old June 5th 21, 07:36 PM posted to rec.woodworking
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Posts: 1,325
Default Save time cutting plywood

On 6/4/2021 10:28 AM, wrote:
On Thursday, June 3, 2021 at 1:48:47 PM UTC-5, Leon wrote:
On 6/3/2021 12:11 PM, wrote:
On Wednesday, May 19, 2021 at 11:15:16 PM UTC-5, Ed Pawlowski wrote:
A little trick that will save lots of time when you have more than one
sheet to cut

https://imgur.com/gallery/9Bz6KYk

Guessing that is a 10" table saw he is using. So it has about a 4" depth of cut.

Well that is nor right, for the vast majority of 10" table saws. 3" and
a bit over is the max I have ever seen. MY ICS SawStop cuts 3.125" deep.

So recalculate everything below. :!) 4 sheets max.


Went to the basement and measured my Delta Contractor saw. It has about a 3" depth of cut. I rarely if ever try to cut maximum depth so never even measured it until your comment. I guessed wrong on the depth of cut. 4 sheets max per cut. But I probably over estimated on the 7.25" circular saw too. It likely only cuts 2 sheets of plywood instead of 3. So some of my calculations may have been right after all. Ha! Better to be lucky than good or smart. Kind of like the guy in the video.





5 sheets of 3/4" plywood. A 7.25" circular saw has about a 2.5" depth
of cut. 3 sheets of 3/4" plywood. So he is able to cut 2 more sheets
with the upside down table saw than if he used a common circular saw.
It is an improvement in productivity. But enough to warrant the extra
effort? Looks like the stack of plywood he is cutting is about 3 feet
tall. About 50 sheets. So it will be 10 passes with his upside down
table saw compared to 17 passes with a circular saw. Worth it? Its
easier to push a circular saw than an upside down table saw. So I bet
the effort and time used for 10 upside down table saw passes will be
more than the 17 circular saw passes. So in the end its a negative from
a labor, production, perspective.

This chap needs to use his obvious and vastly superior mind to invent a new and better way to cut plywood.


It's likely max thought cuts are 4 and 3 and sheets, respectively, but
that presumes as Leon notes, one has a circular saw with sufficient
power to actually do a full three-sheet cut.

If that's the case, it's a 25% decrease in number of passes which again
presuming the case of 50 sheet pile (and the whole pile needs cutting)
would be about 13 versus 17 passes.

Hardly seems worth the effort, but he's a strapping fella' so handling
the saw doesn't seem that much of a problem; one can move the cut sheets
out from under it between passes so don't have to set it back down on
the ground every time.

Compared to trying to reach the middle of the top of the stack with a
handsaw for those first few cuts, doesn't seem too bad a deal to me --
it's big and heavy enough kickback is a pretty minimal risk and while I
don't think I'd have ever thunk of trying it (but I'm surely not stout
enough to get the saw up there in the first place now and not sure ever
was) but I don't see it as particularly dangerous.

Unusual, yes.

--

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Old June 5th 21, 11:28 PM posted to rec.woodworking
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First recorded activity by DIYBanter: Dec 2016
Posts: 2,833
Default Save time cutting plywood

On Sat, 5 Jun 2021 13:36:00 -0500, dpb wrote:

On 6/4/2021 10:28 AM, wrote:
On Thursday, June 3, 2021 at 1:48:47 PM UTC-5, Leon wrote:
On 6/3/2021 12:11 PM, wrote:
On Wednesday, May 19, 2021 at 11:15:16 PM UTC-5, Ed Pawlowski wrote:
A little trick that will save lots of time when you have more than one
sheet to cut

https://imgur.com/gallery/9Bz6KYk

Guessing that is a 10" table saw he is using. So it has about a 4" depth of cut.
Well that is nor right, for the vast majority of 10" table saws. 3" and
a bit over is the max I have ever seen. MY ICS SawStop cuts 3.125" deep.

So recalculate everything below. :!) 4 sheets max.


Went to the basement and measured my Delta Contractor saw. It has about a 3" depth of cut. I rarely if ever try to cut maximum depth so never even measured it until your comment. I guessed wrong on the depth of cut. 4 sheets max per cut. But I probably over estimated on the 7.25" circular saw too. It likely only cuts 2 sheets of plywood instead of 3. So some of my calculations may have been right after all. Ha! Better to be lucky than good or smart. Kind of like the guy in the video.





5 sheets of 3/4" plywood. A 7.25" circular saw has about a 2.5" depth
of cut. 3 sheets of 3/4" plywood. So he is able to cut 2 more sheets
with the upside down table saw than if he used a common circular saw.
It is an improvement in productivity. But enough to warrant the extra
effort? Looks like the stack of plywood he is cutting is about 3 feet
tall. About 50 sheets. So it will be 10 passes with his upside down
table saw compared to 17 passes with a circular saw. Worth it? Its
easier to push a circular saw than an upside down table saw. So I bet
the effort and time used for 10 upside down table saw passes will be
more than the 17 circular saw passes. So in the end its a negative from
a labor, production, perspective.

This chap needs to use his obvious and vastly superior mind to invent a new and better way to cut plywood.


It's likely max thought cuts are 4 and 3 and sheets, respectively, but
that presumes as Leon notes, one has a circular saw with sufficient
power to actually do a full three-sheet cut.

If that's the case, it's a 25% decrease in number of passes which again
presuming the case of 50 sheet pile (and the whole pile needs cutting)
would be about 13 versus 17 passes.

Hardly seems worth the effort, but he's a strapping fella' so handling
the saw doesn't seem that much of a problem; one can move the cut sheets
out from under it between passes so don't have to set it back down on
the ground every time.

Compared to trying to reach the middle of the top of the stack with a
handsaw for those first few cuts, doesn't seem too bad a deal to me --
it's big and heavy enough kickback is a pretty minimal risk and while I
don't think I'd have ever thunk of trying it (but I'm surely not stout
enough to get the saw up there in the first place now and not sure ever
was) but I don't see it as particularly dangerous.


I certainly would want it to run off the end and fall on me, still
running.

Unusual, yes.


I don't see it as being much different than any other clickbait.


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