"Peter Fairbrother" wrote in message news:us3rfg$310vb$1@dont-email.me...

On 28/02/2024 14:55, Richard Smith wrote:
> We covered like topic before - buck/boost.
> Just need to "buck" - reduce voltage from 18V to 12V

Not sure it's a good idea, see below and elsewhere, but if I were doing
it I'd go for a converter rated for at least 3 or 4 times the approx 10A
stall current, likely to cost around £30.

eg https://www.ebay.co.uk/itm/195597726440 DC 24V To DC 13.8V 40A 552W
Step Down Converter.

If you need plastic bits 3D printing can help. .stls of the common
connectors are readily available online, and though typically not very
good, they can be adapted.

The metal parts are usually not too hard to make with simple hand tools,
shears and files etc, and a heavy duty soldering iron.

--------------------------------

The battery terminals on my 14.4V DeWalt drill are flat blades nearly 2mm
thick, the drill contacts are female receptacles. You could make individual
flat blade contacts attached to stiff solid wire and poke them in, slide
rubber tubing down over the wires to prevent an accidental short if they
come loose, then secure them somehow at the opening to the battery well. The
white nylon terminal strips with setscrew wire connection make good
removeable wire splices to connect the flexible power cord, and perhaps hold
the terminal wires in place.

Polymer clay is uncured PVC resin that can be molded to fit an irregular
recess and then hardened in that shape by baking. Plastic parts may be
difficult to copy by measurement because of their draft angles, which are
necessary to remove them from the molds.

"Heatshrink" tubing is better than electrical tape to insulate connections
because it won't loosen with age like some brands of tape. The Marine
version contains hot melt glue that waterproofs the joint.

Peter Fairbrother <peter@tsto.co.uk> writes:

> On 04/03/2024 09:07, Richard Smith wrote:
>> Current type:
>> Dewalt "XR" 18V.
>
> DCH133 @ about £100 ?
>
> There is granite and granite, but
>
> https://www.youtube.com/watch?v=dNat1FCDfiA
>
>
> Peter Fairbrother

Must be doing something right because I also found that channel. The
comparison you found - the two plausible "classic electric drill shaped"
SDS drills - going into granite is about as good as it gets. Didn't
find that exact one.

30-something 12mm holes in granite implies I should be just fine for
shooting holes into granite for "feathers" (splitting wedges).
The 14mm (9/16ths") ones arrived today, BTW.
If the 10mm "feathers" work well, should be fine even when down the mine
with big piles of granite rocks to deal with.

Having spent all this time, will probably go for one - likely the
newer-model drill.
Seems to have enough of an advantage to be worth that extra "headroom" in
performance.
Slower revs but more impact = longer drill-bit life?
I have something like 3 or 4 of the DeWalt "XR" 18V batteries. going
with my other DeWalt tools.
So should be fine down the mine.
Or doing some prospecting. Or whatever.

"Richard Smith" wrote in message news:m1wmqhwvmy.fsf@void.com...

Must be doing something right because I also found that channel. The
comparison you found - the two plausible "classic electric drill shaped"
SDS drills - going into granite is about as good as it gets. Didn't
find that exact one.

30-something 12mm holes in granite implies I should be just fine for
shooting holes into granite for "feathers" (splitting wedges).
The 14mm (9/16ths") ones arrived today, BTW.
If the 10mm "feathers" work well, should be fine even when down the mine
with big piles of granite rocks to deal with.

Having spent all this time, will probably go for one - likely the
newer-model drill.
Seems to have enough of an advantage to be worth that extra "headroom" in
performance.
Slower revs but more impact = longer drill-bit life?
I have something like 3 or 4 of the DeWalt "XR" 18V batteries. going
with my other DeWalt tools.
So should be fine down the mine.
Or doing some prospecting. Or whatever.

------------------

I noticed a tendency for the fracture line to be perpendicular to the bottom
of the holes instead of continuing beyond them, so a large flake shears off
the surface. Perhaps a quarryman would have some good advice.

Peter Fairbrother <peter@tsto.co.uk> writes:

> On 04/03/2024 09:07, Richard Smith wrote:
>> Current type:
>> Dewalt "XR" 18V.
>
> DCH133 @ about £100 ?
>
> There is granite and granite, but
>
> https://www.youtube.com/watch?v=dNat1FCDfiA
>
>
> Peter Fairbrother

Went for the
DeWalt DCH263N

In that test (and others?) there seemed to be enough advantage to the
DCH263, in max drill size, drilling rate and amount of holes drilled per
battery charge. Plus the price is 20quid higher - not vast difference.

Hopefully will report back what it can do.
Aiming for weeks time at the mine.

Rich S

"Richard Smith" wrote in message news:m1msrbpq7j.fsf@void.com...

Peter Fairbrother <peter@tsto.co.uk> writes:

> On 04/03/2024 09:07, Richard Smith wrote:
>> Current type:
>> Dewalt "XR" 18V.
>
> DCH133 @ about £100 ?
>
> There is granite and granite, but
>
> https://www.youtube.com/watch?v=dNat1FCDfiA
>
>
> Peter Fairbrother

Went for the
DeWalt DCH263N

In that test (and others?) there seemed to be enough advantage to the
DCH263, in max drill size, drilling rate and amount of holes drilled per
battery charge. Plus the price is 20quid higher - not vast difference.

Hopefully will report back what it can do.
Aiming for weeks time at the mine.

Rich S

----------------------------
Nice drill, beyond my price range to buy new.
Are they paying you for this?

"Jim Wilkins" <muratlanne@gmail.com> writes:

> "Richard Smith" wrote in message news:m1msrbpq7j.fsf@void.com...
>
> Peter Fairbrother <peter@tsto.co.uk> writes:
>
>> On 04/03/2024 09:07, Richard Smith wrote:

>> Went for the DeWalt DCH263N

> Nice drill, beyond my price range to buy new.
> Are they paying you for this?

No.

But haven't got a "cordless" SDS drill, price pretty good for "bare"
drill and have the batteries already for my "carpentry type" driver (for
wood-screws) and drill (for wood-bits going into joists etc.)

You are probably seeing the price in a pretty box with two
large-capacity batteries - 4Ah or 5Ah.

"Richard Smith" wrote in message news:m134t3flmh.fsf@void.com...

You are probably seeing the price in a pretty box with two
large-capacity batteries - 4Ah or 5Ah.

---------------------------------

I've used a large powerful drill to cut 4" holes for conduit in steel and
would rather not have to need to again. It was inside a closet-sized
electrical enclosure and when the hole saw jammed the long-handled geared
drill would continue for another quarter turn, whether or not some part of
me was in the way.

The Makita is something of a beast too, but I use it outside. When with a
crew I feel like the squad member who has the machine gun.

"Jim Wilkins" <muratlanne@gmail.com> writes:

> "Richard Smith" wrote in message news:m134t3flmh.fsf@void.com...
>
> You are probably seeing the price in a pretty box with two
> large-capacity batteries - 4Ah or 5Ah.
>
> ---------------------------------
>
> I've used a large powerful drill to cut 4" holes for conduit in steel
> and would rather not have to need to again. It was inside a
> closet-sized electrical enclosure and when the hole saw jammed the
> long-handled geared drill would continue for another quarter turn,
> whether or not some part of me was in the way.
>
> The Makita is something of a beast too, but I use it outside. When
> with a crew I feel like the squad member who has the machine gun.

Got the DeWalt DCH263 - arrived.
Seems for-real - batteries I already have fit it, etc.
Bought a couple of SDS masonry drill-bits - 14mm and 10mm.

Already have 14mm "feathers" - splitting wedges.

Hope to take them to the mine next week and see if can split rocks -
this hard granite.

"Richard Smith" wrote in message news:m1il1x6u84.fsf@void.com...

"Jim Wilkins" <muratlanne@gmail.com> writes:

> "Richard Smith" wrote in message news:m134t3flmh.fsf@void.com...
>
> You are probably seeing the price in a pretty box with two
> large-capacity batteries - 4Ah or 5Ah.
>
> ---------------------------------
>
> I've used a large powerful drill to cut 4" holes for conduit in steel
> and would rather not have to need to again. It was inside a
> closet-sized electrical enclosure and when the hole saw jammed the
> long-handled geared drill would continue for another quarter turn,
> whether or not some part of me was in the way.
>
> The Makita is something of a beast too, but I use it outside. When
> with a crew I feel like the squad member who has the machine gun.

Got the DeWalt DCH263 - arrived.
Seems for-real - batteries I already have fit it, etc.
Bought a couple of SDS masonry drill-bits - 14mm and 10mm.

Already have 14mm "feathers" - splitting wedges.

Hope to take them to the mine next week and see if can split rocks -
this hard granite.

--------------------------------
The advice from Trow and Holden was about splitting granite neatly in a
quarry. The miners may have other ways to split it roughly to dispose of it.

The only way I've seen was with the hydraulic jackhammer on an excavator,
and it could take perhaps an hour to crack a large granite boulder left from
blasting and meant for fill. They drilled to blast but not to break up the
rubble.

"Jim Wilkins" <muratlanne@gmail.com> writes:

> "Richard Smith" wrote in message news:m1il1x6u84.fsf@void.com...
>
> "Jim Wilkins" <muratlanne@gmail.com> writes:
>
>> "Richard Smith" wrote in message news:m134t3flmh.fsf@void.com...
>>
>> You are probably seeing the price in a pretty box with two
>> large-capacity batteries - 4Ah or 5Ah.
>>
>> ---------------------------------
>>
>> I've used a large powerful drill to cut 4" holes for conduit in steel
>> and would rather not have to need to again. It was inside a
>> closet-sized electrical enclosure and when the hole saw jammed the
>> long-handled geared drill would continue for another quarter turn,
>> whether or not some part of me was in the way.
>>
>> The Makita is something of a beast too, but I use it outside. When
>> with a crew I feel like the squad member who has the machine gun.
>
> Got the DeWalt DCH263 - arrived.
> Seems for-real - batteries I already have fit it, etc.
> Bought a couple of SDS masonry drill-bits - 14mm and 10mm.
>
> Already have 14mm "feathers" - splitting wedges.
>
> Hope to take them to the mine next week and see if can split rocks -
> this hard granite.
>
> --------------------------------
> The advice from Trow and Holden was about splitting granite neatly in
> a quarry. The miners may have other ways to split it roughly to
> dispose of it.
>
> The only way I've seen was with the hydraulic jackhammer on an
> excavator, and it could take perhaps an hour to crack a large granite
> boulder left from blasting and meant for fill. They drilled to blast
> but not to break up the rubble.

Amazed at supplies store here in UK - one link was "black powder".
Followed the link - is used by stonemasons - makes total sense.
Will part rock from rock - but not shatter the rock - which a "modern"
blasting medium would.

So you saw unusable stone - for some reason - shape, flaws, etc.? -
which they had to break-up?

Probably mentioned previously - the task at the mine is said to be
because, although they used a brisant blasting medium, they didn't use
enough of it to shatter rock into easily-managed small stuff.
Which nett is usually much cheaper (?) than having to break up big
rocks.

"Richard Smith" wrote in message news:m1frx0reyj.fsf@void.com...

"Jim Wilkins" <muratlanne@gmail.com> writes:
>
> The only way I've seen was with the hydraulic jackhammer on an
> excavator, and it could take perhaps an hour to crack a large granite
> boulder left from blasting and meant for fill. They drilled to blast
> but not to break up the rubble.

So you saw unusable stone - for some reason - shape, flaws, etc.? -
which they had to break-up?

------------------------------

That was at a construction site where they were smoothing very uneven
terrain enough to build houses on. They blasted the ridges to fill in the
gulleys and named the development in memory of what they had destroyed. A
machine like this crushed much of the rubble to gravel, sharp-edged like you
want instead of the glacial-runoff-smoothed gravel in the ground here.
https://www.quarrymagazine.com/2020/03/19/selecting-the-right-crusher-for-your-operations/

The relatively little flat land here is mostly already developed. New
Hampshire is the "Granite State" for good reason, it somewhat resembles the
Scottish Highlands, even to the caber tossing.
https://nhscot.org/highland-games-nh/
Notice the background mountains. The site is a ski resort.

Hi everyone.

Posted at top of thread - wishing to thank everyone who contributed to
this "journey" whose extent (effort, duration) I never anticipated.

Here is the outcome - what a surprise. In a very pleasant way!
There is hope this is "for real".
I handed the equipment to another person who came by to see how I as
getting on, and trying it he concurs - it works and it is to be hoped
this is "for real".

http://www.weldsmith.co.uk/tech/minerals/240314_rocksplit/240314_rocksplit_drill_feathers.html
"Rock-split granite with "cordless" SDS drill and "feathers""

Well would you ever have believed it...?!

Best wishes,
Rich Smith

On Fri, 15 Mar 2024 13:31:43 +0000, Richard Smith <null@void.com>
wrote:

>Hi everyone.
>
>Posted at top of thread - wishing to thank everyone who contributed to
>this "journey" whose extent (effort, duration) I never anticipated.
>
>Here is the outcome - what a surprise. In a very pleasant way!
>There is hope this is "for real".
>I handed the equipment to another person who came by to see how I as
>getting on, and trying it he concurs - it works and it is to be hoped
>this is "for real".
>
>http://www.weldsmith.co.uk/tech/minerals/240314_rocksplit/240314_rocksplit_drill_feathers.html
>"Rock-split granite with "cordless" SDS drill and "feathers""
>
>Well would you ever have believed it...?!
>
>Best wishes,
>Rich Smith
Excellent, Rick

On Fri, 15 Mar 2024 13:31:43 +0000
Richard Smith <null@void.com> wrote:

<snip>
>http://www.weldsmith.co.uk/tech/minerals/240314_rocksplit/240314_rocksplit_drill_feathers.html
>"Rock-split granite with "cordless" SDS drill and "feathers""

Rich,

NICE job! You have a working solution to this problem👍

Forgive me... but my mind immediately went to why not make (or buy)
some larger feathers to fit the Pneumatic drill hole and maybe some
smaller feathers so your battery drill could use a smaller drill hole🤔

--
Leon Fisk
Grand Rapids MI

"Richard Smith" wrote in message news:m1bk7f62ps.fsf@void.com...

Hi everyone.

Posted at top of thread - wishing to thank everyone who contributed to
this "journey" whose extent (effort, duration) I never anticipated.

Here is the outcome - what a surprise. In a very pleasant way!
There is hope this is "for real".
I handed the equipment to another person who came by to see how I as
getting on, and trying it he concurs - it works and it is to be hoped
this is "for real".

http://www.weldsmith.co.uk/tech/minerals/240314_rocksplit/240314_rocksplit_drill_feathers.html
"Rock-split granite with "cordless" SDS drill and "feathers""

Well would you ever have believed it...?!

Best wishes,
Rich Smith

-----------------------------------------
Congratulations on your success! You are a skilled problem solver.

The shims / feathers are soft, the wedges need to be hardened and tempered,
as I found out with shop-made ones. A horizontal bandsaw can cut the taper
angles or a smith can forge them from silver steel or old truck coil
springs.

You might consider my alternate method if the boulders don't have far to go.
I also have largeish boulders to move over uneven ground, at least to the
trails where I can hoist and tow them on my 1 ton shop crane trailer. Before
acquiring the drill I used a home-made gantry hoist of 3" x 8' channel iron
with a 1 ton trolley, supported on various improvised legs of wooden A
frames or pipe tripods. The wooden legs had trailer caster jacks as
retractable landing gear to easily move the gantry by myself with the load
lowered, where the ground was fairly level. On steeper slopes the low end of
the track hung from a pipe tripod, which was harder to move. The legs on
mine swing freely at the top connection which allows walking one leg at a
time and adjusting for slope or bad footing.

The wheels of the Harbor Freight trolley were slightly too large for the 3"
channel so I turned them down on the lathe. 4" channel takes them as-is, and
has a better strength margin / less flex at full load. At the time I had
only the 3", surplus pallet rack shelf supports.

I just discovered that the world's oldest still-working powered vehicle is
an 1831 Stephenson-built locomotive in the Smithsonian museum nicknamed the
John Bull.
Here it's running (at reduced boiler pressure) on its 150th anniversary:
https://upload.wikimedia.org/wikipedia/en/8/86/John_Bull_operating_in_1981.jpg

https://en.wikipedia.org/wiki/John_Bull
John Doe for an unspecified American is from the same source.

"Leon Fisk" wrote in message news:ut1pkd$293a4$1@dont-email.me...

On Fri, 15 Mar 2024 13:31:43 +0000
Richard Smith <null@void.com> wrote:

<snip>
>http://www.weldsmith.co.uk/tech/minerals/240314_rocksplit/240314_rocksplit_drill_feathers.html
>"Rock-split granite with "cordless" SDS drill and "feathers""

Rich,

NICE job! You have a working solution to this problem👍

Forgive me... but my mind immediately went to why not make (or buy)
some larger feathers to fit the Pneumatic drill hole and maybe some
smaller feathers so your battery drill could use a smaller drill hole🤔

--
Leon Fisk
Grand Rapids MI

------------------------------------------
Don't let their size fool you, they aren't cheap.
https://trowandholden.com/wedge-shim-sets.html

Leon Fisk <lfiskgr@gmail.invalid> writes:

> On Fri, 15 Mar 2024 13:31:43 +0000
> Richard Smith <null@void.com> wrote:
>
> <snip>
>>http://www.weldsmith.co.uk/tech/minerals/240314_rocksplit/240314_rocksplit_drill_feathers.html
>>"Rock-split granite with "cordless" SDS drill and "feathers""
>
> Rich,
>
> NICE job! You have a working solution to this problem👍
>
> Forgive me... but my mind immediately went to why not make (or buy)
> some larger feathers to fit the Pneumatic drill hole and maybe some
> smaller feathers so your battery drill could use a smaller drill hole🤔

Not at all "forgive" - comment welcomed.

There are some large feathers for the 32mm to 34mm hole.
Thing is, from my observation, they work no better than the small
feathers on this granite.
Line of small holes with matching feathers is "it".

Problem is the compressor isn't running all the time.
Would be in a working mine, but this is a "hobby" mine.
Splitting rocks and clearing debris is like an infil job which comes
when it comes.
Takes several people and some time to get the compressor running.
Not going to happen when you find yourself with some time mid-way
through a club morning at the mine.

If I could make some wedges of the same taper but thinner, maybe could
come down to a 12mm / half-inch hole
Area-ratio, so proportional to diameter-squared
(/f (expt 14 2) (expt 12 2)) ;; 1.3611111111111112
(/f (expt 12 2) (expt 14 2)) ;; 0.7346938775510204
73% of the area.
Would be well worth having.

Yes absolutely {thumbs-up}

Best wishes, Rich Smith

"Jim Wilkins" <muratlanne@gmail.com> writes:

> "Leon Fisk" wrote in message news:ut1pkd$293a4$1@dont-email.me...
>
> On Fri, 15 Mar 2024 13:31:43 +0000
> Richard Smith <null@void.com> wrote:
>
> <snip>
>>http://www.weldsmith.co.uk/tech/minerals/240314_rocksplit/240314_rocksplit_drill_feathers.html
>>"Rock-split granite with "cordless" SDS drill and "feathers""
>
> Rich,
>
> NICE job! You have a working solution to this problem👍
>
> Forgive me... but my mind immediately went to why not make (or buy)
> some larger feathers to fit the Pneumatic drill hole and maybe some
> smaller feathers so your battery drill could use a smaller drill hole🤔

If I'd got the Trow & Holden feathers they would have been as-described
and I could use a 10mm drill

(/f (expt 10 2) (expt 14 2)) ;; 0.5102040816326531

Half the area and volume drilled.

"I had to start somewhere" :-)

Best wishes,

Thanks again everyone.
Lots of very encouraging words - appreciated.
When I wrote that webpage on the working solution I recalled how much
interconnected detail there is in getting there.

Is it worth writing those webpages?
Well it seems as if a lot of things is like climbing an ice face with two
picks, and you don't let any grip be feeble.
I get a lot of help and hopefully to some extent earn it.

Best wishes

On Fri, 15 Mar 2024 18:35:24 +0000
Richard Smith <null@void.com> wrote:

<snip>
>There are some large feathers for the 32mm to 34mm hole.
>Thing is, from my observation, they work no better than the small
>feathers on this granite.

My thinking was if there were already big holes drilled and the piece
hadn't been split you wouldn't have to make more holes.

Regarding whether to make a webpage with stuff like this... I gain info
from lots of web pages that aren't exactly about the problem I'm trying
to solve. I find them useful. You do a lot of the same. You're able to
apply a concept or idea elsewhere in a completely unrelated field. As
I've aged I now realize a lot of people can't do this😑

--
Leon Fisk
Grand Rapids MI

On 3/15/2024 12:41 PM, Leon Fisk wrote:
> On Fri, 15 Mar 2024 18:35:24 +0000
> Richard Smith <null@void.com> wrote:
>
> <snip>
>> There are some large feathers for the 32mm to 34mm hole.
>> Thing is, from my observation, they work no better than the small
>> feathers on this granite.
>
> My thinking was if there were already big holes drilled and the piece
> hadn't been split you wouldn't have to make more holes.
>
> Regarding whether to make a webpage with stuff like this... I gain info
> from lots of web pages that aren't exactly about the problem I'm trying
> to solve. I find them useful. You do a lot of the same. You're able to
> apply a concept or idea elsewhere in a completely unrelated field. As
> I've aged I now realize a lot of people can't do this😑
>

I used to call it relational hooks. There more stuff you know the
easier it is to learn other stuff.

--
Bob La Londe
CNC Molds N Stuff

--
This email has been checked for viruses by AVG antivirus software.
www.avg.com

On 15/03/2024 18:35, Richard Smith wrote:
> Leon Fisk <lfiskgr@gmail.invalid> writes:
>
>> On Fri, 15 Mar 2024 13:31:43 +0000
>> Richard Smith <null@void.com> wrote:
>>
>> <snip>
>>> http://www.weldsmith.co.uk/tech/minerals/240314_rocksplit/240314_rocksplit_drill_feathers.html
>>> "Rock-split granite with "cordless" SDS drill and "feathers""
>> Rich,
>>
>> NICE job! You have a working solution to this problem👍
>>
>> Forgive me... but my mind immediately went to why not make (or buy)
>> some larger feathers to fit the Pneumatic drill hole and maybe some
>> smaller feathers so your battery drill could use a smaller drill hole🤔
> Not at all "forgive" - comment welcomed.
>
> There are some large feathers for the 32mm to 34mm hole.
> Thing is, from my observation, they work no better than the small
> feathers on this granite.
> Line of small holes with matching feathers is "it".
>
> Problem is the compressor isn't running all the time.
> Would be in a working mine, but this is a "hobby" mine.
> Splitting rocks and clearing debris is like an infil job which comes
> when it comes.
> Takes several people and some time to get the compressor running.
> Not going to happen when you find yourself with some time mid-way
> through a club morning at the mine.
>
> If I could make some wedges of the same taper but thinner, maybe could
> come down to a 12mm / half-inch hole
> Area-ratio, so proportional to diameter-squared
> (/f (expt 14 2) (expt 12 2)) ;; 1.3611111111111112
> (/f (expt 12 2) (expt 14 2)) ;; 0.7346938775510204
> 73% of the area.
> Would be well worth having.
>
> Yes absolutely {thumbs-up}
>
> Best wishes, Rich Smith

Richard,

Have you tried or considered the old method of dry wood hammered into
the holes and then wetting it, not something I've tried but an article
here
https://www.researchgate.net/figure/Rock-split-by-using-the-swelling-pressure-of-wood-Egypt-2001_fig5_267834899
..

"David Billington" wrote in message news:ut2am8$2ev2g$1@dont-email.me...

Richard,

Have you tried or considered the old method of dry wood hammered into
the holes and then wetting it, not something I've tried but an article
here
https://www.researchgate.net/figure/Rock-split-by-using-the-swelling-pressure-of-wood-Egypt-2001_fig5_267834899
..
---------------------------------
I don't put much faith in academic scholars' guesses about Egyptian tech.
The pyramid stones weigh around 5000 Lbs, a weight a small crew with j-bars
can slide onto a flat bed truck, BTDT. I've lifted 4000 Lb logs to block
them up off the damp ground.
https://www.sunbeltrentals.com/equipment-rental/forklifts/johnson-bar/1501085/

There are similar splitting cuts in stones at Mystery Hill in Salem NH, USA.
The guides' explanation is that they were cut with a thin chisel for iron
splitting wedges before the star drill was invented in the early 1800's.
Water is easily squeezed out of wet wood.
https://mysteryhillnh.info/

A similar but undercut slot is used to lift stones:
https://en.wikipedia.org/wiki/Lewis_(lifting_appliance)
The 3 legged one was a status symbol for Church officials.

"Richard Smith" wrote in message news:m11q8bgwlr.fsf@void.com...

Is it worth writing those webpages?

------------------------------
They are interesting and could be very valuable for a job application for a
research project, showing you can both do innovative work and present the
results clearly.
https://www.verywellhealth.com/left-brain-vs-right-brain-7093257

I post for practice in clear technical explanation, a skill I've struggled
with for much of my life, until I found a critical audience here whose
opinions don't affect my yearly reviews or paychecks.

Lately I've been writing spreadsheets for practice. Today I completed one
that calculates my taxes. My sister actually files them for me with
professional software, and each year I've come closer to matching her
results.