hey folks how you doing hopefully you're
all having a great day today this is
part
two of a three-part series on building a
contractor
rolling tool box a big contractor
trailer
uh to take to different job sites this
isn't for me this is for a friend of
mine
a local friend of mine who is an on-site
contractor so part one of this series
covered the sketchup design or how we
came to this particular design
part two which is this video right here
we'll cover the entire assembly
and cutting and assembly and then part
three will be a walk through
of the 100 completed ready for the
maiden voyage
trailer so without further ado let's
rewind about a month
and we'll get started with cutting and
assembly this project calls for 25
sheets of plywood the majority of those
are one half of an inch thick a few at
three quarters of an inch thick
and a few at one quarter of an inch
thick 23 of the 25 sheets are cut on the
cnc
machine with the rest being basic table
saw cuts
cutting an assembly day started at 8 30
a.m
and we wasted no time getting the cnc
running our number one priority for the
entire day was to keep the machine
running we can always find something to
do while the machine runs
so no matter what when the machine
stopped we needed to
unload load and start it up again
quickly ben and misty aren't familiar
with the nuances of cnc design
or cnc cutting so during the first sheet
i made sure to let them know how the
tabs work
small tabs are added to the tool paths
to prevent the pieces from shifting
after the piece is cut this is necessary
when you don't
have a vacuum table on the machine to
hold the material to the table
as you will see later instead of
removing the parts piece by piece
on the machine the entire sheet is moved
to the assembly table where the pieces
can be removed from the waste
for all 23 sheets i ran the same one
quarter of an inch diameter two flute
spiral down cut bit
from bits and bits.com it's an astral
coated bit which reduces friction and
heat buildup
which therefore prolongs the life of the
bit all of the tool paths were set at a
quarter inch depth of cut
and 300 inches per minute travel while
cutting the first
sheet i increased the travel in mach 4
to 150
which put it at about 450 inches per
minute of travel
but i did forget to adjust the spindle
rpm
luckily we didn't see any decrease in
cut quality with the increased chip load
when laying out the pieces to be cut the
quickest thing to do is just let the
software nest the parts
however i did not want pieces of each
cabinet in each drawer to be spread
among
many sheets so i nested them manually
having full control over the nesting
process it slows things down a little
bit on the front end
but in doing so i was able to get ben
and misty assembling by the end of sheet
number two
the assembly process is crazy simple
this style of construction
uses box joints for everything on edge
and mortise and tenon for everything in
the middle
it's like putting together a set of big
kid legos we started with the right wall
which is the drawer wall
and there are four drawer cabinets on
this side with a divider system above
each one of the cabinets gets two
horizontal braces on top two on back and
two
on bottom after a few sheets we all
settled into a groove and
and stayed busy misty was always
assembling
ben was helping assemble and then also
removing tabs when the new sheet came
off the machine
and i was helping ben with the tabs when
i wasn't getting the machine going
all three of us were moving and we
rarely stopped we were like in a
well-oiled machine and it felt
really really good to be leading so much
productivity
it finally dawned on me that a flush
trim bit and the trim router wasn't the
most efficient tool for the tabs
due to the high number of pieces for
this particular job a much better
process would be to take the part
to the tool rather than the tool to the
part so i set up the router table with a
flush trim bit instead
once the router table was set up ben and
i established a little bit of a workflow
where
i would break down the pieces free from
the waste and stack them for trimming at
the router table
this sped things up quite a bit after
all four cabinets were assembled the
drawer marathon
could begin and that's exactly what it
was it was a drawer marathon
this design calls for 26 drawers of four
different sizes
one of the best takeaways from this
build was the use of numbered
drawers each drawer front got a number
cut into it and this is
it's incredibly convenient for the crew
working on site after getting accustomed
to the drawer layout someone can ask for
a runner to
go get whatever item out of whatever
number drawer and immediately know where
it is
so since implementing this system for
ben and his trailer i want to do this to
all of the drawers in my shop everything
that i make going forward
here you can get a better idea of the
construction method as i said box joints
for every joint on the edges
and mortise antenna joints for all of
the interior connections
the drawer assembly marathon continued
for the rest of day one which
only lasted five and a half hours due to
some scheduling issues
and in those five and a half hours we
got all of the full sheet
cnc work done we assembled all four of
the right side cabinets
we assembled all 26 drawers and got
started
on the divider system we were knocking
out some serious work
and it felt great day two in the shop
started out with the divider system
that's gonna go on top of the drawer
cabinets
on the right wall this is a 90 inch long
cabinet with one quarter of an inch wide
dadoes spaced about one and a half
inches apart the dadoes are for
quarter inch plywood panels to divide
the space as needed
from here on out there is no cnc box
joints or mortise and tenon joints it's
all
pocket holes it's all brad nails and a
lot of glue
the back panel stiffens the assembly and
is held in place with glue and brad
nails
at this point the cnc work it's done the
rest of the cutting can be done with the
table saw and miter saw
so i was ripping strips of one quarter
of an inch plywood at the table saw
while ben and misty were sizing them to
fit in the box
at the miter saw finally the left side
can begin
and this side is a much more simple
design
it's a larger assembly but it's a more
simple design that has
larger item and scrap wood storage a big
priority for ben was to have an
organized system to store scrap wood
and scrap plywood making this large of a
project
also made me realize a few things about
my shop layout and workflow
first returning to a four foot by eight
foot assembly table was a great move
especially for plywood based projects
second
i realized that i have a lot of medium
sized
walkways that result in less open floor
space for large assemblies
as much open space as i have here in the
shop we had to slide the assembly table
around a few times
to get the left side assembly built the
last piece of the puzzle was to add the
floor piece to the left side assembly
then we could orient it for loading into
the trailer we ended up making some very
specific
brackets to use existing bolt holes in
the left wall
for securing the left side assembly and
the entire right side it was just kind
of set in place
and temporarily strapped to the wall for
the ride home this concludes the work in
my shop
in total we had 10 shop hours of work
spread over two days
the first five and a half hours of day
one that was with me
ben and misty and then day two four and
a half hours was
me ben misty and one of their employees
uh chris i'm not mistaken we worked
great as a team and we were very
very productive part one of this build
covers the sketchup design
the cutting and assembly covered here is
part two
and part three will cover the completed
and loaded trailer
right before its maiden voyage so that's
it for this video be sure to go to
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and i'll talk to you in the next video