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The Scariac (Poor Mans Variable Power Controller)


mixing water with electricity is

mixing water with electricity is typically discouraged and for good

typically discouraged and for good

typically discouraged and for good reason but in this project we’re pumping

reason but in this project we’re pumping

reason but in this project we’re pumping electricity into water with a bit of

electricity into water with a bit of

electricity into water with a bit of drain cleaner to create a poor man’s

drain cleaner to create a poor man’s

drain cleaner to create a poor man’s power controller you might have heard of

power controller you might have heard of

power controller you might have heard of a very AK this is the scary AK

in a couple of other projects we

in a couple of other projects we fashioned a homemade stick welder using

fashioned a homemade stick welder using

fashioned a homemade stick welder using parts we salvaged from old appliances I

parts we salvaged from old appliances I

parts we salvaged from old appliances I powered the device with 240 volts AC and

powered the device with 240 volts AC and

powered the device with 240 volts AC and that was plenty of power but we still

that was plenty of power but we still

that was plenty of power but we still needed a way to adjust the current I

needed a way to adjust the current I

needed a way to adjust the current I built this device to control alternating

built this device to control alternating

built this device to control alternating current so we have the ability to play

current so we have the ability to play

current so we have the ability to play with adjustable power settings on a

with adjustable power settings on a

with adjustable power settings on a budget now this concept is about as

budget now this concept is about as

budget now this concept is about as dangerous as sticking to live wires in a

dangerous as sticking to live wires in a

dangerous as sticking to live wires in a bucket of water it can be deadly so it’s

bucket of water it can be deadly so it’s

bucket of water it can be deadly so it’s important to know and understand the

important to know and understand the

important to know and understand the risks to build this scary act will need

risks to build this scary act will need

risks to build this scary act will need a four gallon container to hold our

a four gallon container to hold our

a four gallon container to hold our electrolyte and I like this one because

electrolyte and I like this one because

electrolyte and I like this one because it’s got a lid that snaps on tight I cut

it’s got a lid that snaps on tight I cut

it’s got a lid that snaps on tight I cut a piece of board so that it measures at

a piece of board so that it measures at

a piece of board so that it measures at 16 inches by 14 inches because that fits

16 inches by 14 inches because that fits

16 inches by 14 inches because that fits on top leaving a three inch overhang on

on top leaving a three inch overhang on

on top leaving a three inch overhang on the side I made this plastic template

the side I made this plastic template

the side I made this plastic template for marking holes for where the switch

for marking holes for where the switch

for marking holes for where the switch and outlet will go and a few other

and outlet will go and a few other

and outlet will go and a few other markings based on these measurements to

markings based on these measurements to

markings based on these measurements to cut the holes out let’s drill the

cut the holes out let’s drill the

cut the holes out let’s drill the corners first and use a jigsaw to cut

corners first and use a jigsaw to cut

corners first and use a jigsaw to cut the sides we can use the light switch as

the sides we can use the light switch as

the sides we can use the light switch as a template for marking where the two

a template for marking where the two

a template for marking where the two holes will need to be drilled this part

holes will need to be drilled this part

holes will need to be drilled this part is optional but let’s go ahead and

is optional but let’s go ahead and

is optional but let’s go ahead and finish the edges with a half-inch

finish the edges with a half-inch

finish the edges with a half-inch rounding bit on the router table by

rounding bit on the router table by

rounding bit on the router table by profiling the tops and bottoms of all

profiling the tops and bottoms of all

profiling the tops and bottoms of all the edges we’re left with a nice smooth

the edges we’re left with a nice smooth

the edges we’re left with a nice smooth finish next we’ll need two pieces of 2×2

finish next we’ll need two pieces of 2×2

finish next we’ll need two pieces of 2×2 and I had these ones leftover from when

and I had these ones leftover from when

and I had these ones leftover from when we made our mousetrap handguns which you

we made our mousetrap handguns which you

we made our mousetrap handguns which you can see in a different project I drilled

can see in a different project I drilled

can see in a different project I drilled a hole through the sides of the blocks

a hole through the sides of the blocks

a hole through the sides of the blocks half an inch from the top and cut them

half an inch from the top and cut them

half an inch from the top and cut them down to one and a quarter inches so they

down to one and a quarter inches so they

down to one and a quarter inches so they look like this these blocks will need to

look like this these blocks will need to

look like this these blocks will need to be secured flush with the top of the

be secured flush with the top of the

be secured flush with the top of the center hole so let’s trace the edges and

center hole so let’s trace the edges and

center hole so let’s trace the edges and drill four pilot holes on diagonals

drill four pilot holes on diagonals

drill four pilot holes on diagonals they’ll eventually be held in place with

they’ll eventually be held in place with

they’ll eventually be held in place with screws from the bottom side I gave these

screws from the bottom side I gave these

screws from the bottom side I gave these parts of paint job and now the panel

parts of paint job and now the panel

parts of paint job and now the panel board is complete and we can move on to

board is complete and we can move on to

board is complete and we can move on to constructing the power lever all the

constructing the power lever all the

constructing the power lever all the parts for the power lever are laid out

parts for the power lever are laid out

parts for the power lever are laid out here and you can see they’re mainly 1/2

here and you can see they’re mainly 1/2

here and you can see they’re mainly 1/2 inch PVC parts as well as these other

inch PVC parts as well as these other

inch PVC parts as well as these other miscellaneous bits of hardware now we

miscellaneous bits of hardware now we

miscellaneous bits of hardware now we can get to work priming and cementing

can get to work priming and cementing

can get to work priming and cementing the PVC together so that we end up with

the PVC together so that we end up with

the PVC together so that we end up with two sections that look like this they’ll

two sections that look like this they’ll

two sections that look like this they’ll be fit together later on but here you

be fit together later on but here you

be fit together later on but here you can get a basic idea of how it’s gonna

can get a basic idea of how it’s gonna

can get a basic idea of how it’s gonna work

work

work we’ll need to mark and drill hole right

we’ll need to mark and drill hole right

we’ll need to mark and drill hole right through the lower part of the tee then

through the lower part of the tee then

through the lower part of the tee then make the hole bigger on the inner sides

make the hole bigger on the inner sides

make the hole bigger on the inner sides the hole has to be just big enough to

the hole has to be just big enough to

the hole has to be just big enough to allow the head of a two and a half inch

allow the head of a two and a half inch

allow the head of a two and a half inch bolt to pass through here you can see I

bolt to pass through here you can see I

bolt to pass through here you can see I added a metal washer and a beveled

added a metal washer and a beveled

added a metal washer and a beveled rubber washer on the inside at this

rubber washer on the inside at this

rubber washer on the inside at this point the two parts of the handle could

point the two parts of the handle could

point the two parts of the handle could be cemented together and the excess glue

be cemented together and the excess glue

be cemented together and the excess glue wiped away I decided to paint the handle

wiped away I decided to paint the handle

wiped away I decided to paint the handle red to give it a nice contrast against

red to give it a nice contrast against

red to give it a nice contrast against the black we can add a rubber washer to

the black we can add a rubber washer to

the black we can add a rubber washer to the bolt first and the block gets pushed

the bolt first and the block gets pushed

the bolt first and the block gets pushed on next until you see about a quarter

on next until you see about a quarter

on next until you see about a quarter inch of the bolt poking out on the end I

inch of the bolt poking out on the end I

inch of the bolt poking out on the end I added a washer and a wingnut to hold it

added a washer and a wingnut to hold it

added a washer and a wingnut to hold it in place and now we have the ability to

in place and now we have the ability to

in place and now we have the ability to adjust the tension on the power lever

adjust the tension on the power lever

adjust the tension on the power lever now that our blocks are attached let’s

now that our blocks are attached let’s

now that our blocks are attached let’s push the bottom part of the handle

push the bottom part of the handle

push the bottom part of the handle through the hole and secure the blocks

through the hole and secure the blocks

through the hole and secure the blocks to the board using the screws lined up

to the board using the screws lined up

to the board using the screws lined up earlier at this point we’re ready to

earlier at this point we’re ready to

earlier at this point we’re ready to wire up the electrical and this is how

wire up the electrical and this is how

wire up the electrical and this is how it’s gonna look when it’s finished I

it’s gonna look when it’s finished I

it’s gonna look when it’s finished I started with two seventeen inch pieces

started with two seventeen inch pieces

started with two seventeen inch pieces of half-inch copper tubing

of half-inch copper tubing

of half-inch copper tubing let’s make four markings at three four

let’s make four markings at three four

let’s make four markings at three four and a half and twelve and a half and

and a half and twelve and a half and

and a half and twelve and a half and fourteen inches that should leave us

fourteen inches that should leave us

fourteen inches that should leave us with an 8 inch gap between the middle

with an 8 inch gap between the middle

with an 8 inch gap between the middle markings now we can use a hammer or

markings now we can use a hammer or

markings now we can use a hammer or bench vise to compress the copper

bench vise to compress the copper

bench vise to compress the copper allowing us to bend it over easily when

allowing us to bend it over easily when

allowing us to bend it over easily when all the markings have been compressed

all the markings have been compressed

all the markings have been compressed including the tips the electrode can be

including the tips the electrode can be

including the tips the electrode can be formed into a rectangle and should look

formed into a rectangle and should look

formed into a rectangle and should look like this I’ve drilled a hole through

like this I’ve drilled a hole through

like this I’ve drilled a hole through the center of the tips continuing into

the center of the tips continuing into

the center of the tips continuing into the tube itself but only through one

the tube itself but only through one

the tube itself but only through one side of it for this electrode let’s add

side of it for this electrode let’s add

side of it for this electrode let’s add a four inch plastic PVC riser so that it

a four inch plastic PVC riser so that it

a four inch plastic PVC riser so that it lines up flush with one of the edges

lines up flush with one of the edges

lines up flush with one of the edges then we can put a screw right through it

then we can put a screw right through it

then we can put a screw right through it so it’s held between the two pieces of

so it’s held between the two pieces of

so it’s held between the two pieces of copper if the other end of this riser

copper if the other end of this riser

copper if the other end of this riser can screw into the bottom of our power

can screw into the bottom of our power

can screw into the bottom of our power lever and making sure the copper bar is

lever and making sure the copper bar is

lever and making sure the copper bar is facing forward the other four inch riser

facing forward the other four inch riser

facing forward the other four inch riser gets added into the power lever and can

gets added into the power lever and can

gets added into the power lever and can be secured to the copper as well to form

be secured to the copper as well to form

be secured to the copper as well to form the second electrode holder I added a

the second electrode holder I added a

the second electrode holder I added a PVC cap to a six inch PVC riser and used

PVC cap to a six inch PVC riser and used

PVC cap to a six inch PVC riser and used a belt sander to cryed away at the top

a belt sander to cryed away at the top

a belt sander to cryed away at the top until it was completely flat with the

until it was completely flat with the

until it was completely flat with the power lever in the full upright position

power lever in the full upright position

power lever in the full upright position we can get a feel for where the longer

we can get a feel for where the longer

we can get a feel for where the longer risers will need to be attached

risers will need to be attached

risers will need to be attached using two screws for each riser we can

using two screws for each riser we can

using two screws for each riser we can fight down into the riser caps securing

fight down into the riser caps securing

fight down into the riser caps securing them in position now the second

them in position now the second

them in position now the second electrode can be added adjusting it so

electrode can be added adjusting it so

electrode can be added adjusting it so it’s the same height as the first and of

it’s the same height as the first and of

it’s the same height as the first and of course two more screws will fix the

course two more screws will fix the

course two more screws will fix the copper in place now it’s time to rig up

copper in place now it’s time to rig up

copper in place now it’s time to rig up the wiring for this contraption I’ve got

the wiring for this contraption I’ve got

the wiring for this contraption I’ve got some 12 gauge cable and a two prong plug

some 12 gauge cable and a two prong plug

some 12 gauge cable and a two prong plug the plug opens up allowing us to connect

the plug opens up allowing us to connect

the plug opens up allowing us to connect our two wires and screws back together

our two wires and screws back together

our two wires and screws back together completing this end of the cable the

completing this end of the cable the

completing this end of the cable the black wire from the cable runs to the

black wire from the cable runs to the

black wire from the cable runs to the light switch first and connects to the

light switch first and connects to the

light switch first and connects to the screw on the far side the wire is cut

screw on the far side the wire is cut

screw on the far side the wire is cut and connected to the other screw on the

and connected to the other screw on the

and connected to the other screw on the switch then continues to this hole

switch then continues to this hole

switch then continues to this hole drilled through the board on the top

drilled through the board on the top

drilled through the board on the top side you can see the wire is bent over

side you can see the wire is bent over

side you can see the wire is bent over in an arch and goes back through the

in an arch and goes back through the

in an arch and goes back through the board where it continues to the

board where it continues to the

board where it continues to the electrode on the power lever the

electrode on the power lever the

electrode on the power lever the electrode wire can simply be connected

electrode wire can simply be connected

electrode wire can simply be connected by looping it behind the existing screw

by looping it behind the existing screw

by looping it behind the existing screw and fastening tight let’s use another

and fastening tight let’s use another

and fastening tight let’s use another piece of the black wire and connect it

piece of the black wire and connect it

piece of the black wire and connect it to the other electrode in the same way

to the other electrode in the same way

to the other electrode in the same way you can see this wire connects to the

you can see this wire connects to the

you can see this wire connects to the outlet and gets held on with one of the

outlet and gets held on with one of the

outlet and gets held on with one of the gold screws this silver screw is

gold screws this silver screw is

gold screws this silver screw is connected to the white wire running from

connected to the white wire running from

connected to the white wire running from the cable and this completes our

the cable and this completes our

the cable and this completes our electrical work at this point we can

electrical work at this point we can

electrical work at this point we can fasten the light switch and the outlet

fasten the light switch and the outlet

fasten the light switch and the outlet onto the control board and add the face

onto the control board and add the face

onto the control board and add the face plates for a finishing touch this

plates for a finishing touch this

plates for a finishing touch this control panel is fully functional but if

control panel is fully functional but if

control panel is fully functional but if you wanted to add a little more safety

you wanted to add a little more safety

you wanted to add a little more safety you put out a replaceable fuse or even

you put out a replaceable fuse or even

you put out a replaceable fuse or even wire up a circuit breaker to finish up

wire up a circuit breaker to finish up

wire up a circuit breaker to finish up the system we’ll just need to modify

the system we’ll just need to modify

the system we’ll just need to modify this lid we can use a rotary tool with a

this lid we can use a rotary tool with a

this lid we can use a rotary tool with a cutting wheel to cut along the inner

cutting wheel to cut along the inner

cutting wheel to cut along the inner edges leaving just the rim intact the

edges leaving just the rim intact the

edges leaving just the rim intact the inside hole has to be large enough to

inside hole has to be large enough to

inside hole has to be large enough to allow both electrodes to fit in freely

allow both electrodes to fit in freely

allow both electrodes to fit in freely and when it’s centered on the top we can

and when it’s centered on the top we can

and when it’s centered on the top we can screw together the four corners so it’s

screw together the four corners so it’s

screw together the four corners so it’s all attached this way it clamps into

all attached this way it clamps into

all attached this way it clamps into position perfectly every time I wanted

position perfectly every time I wanted

position perfectly every time I wanted to add a piece of trim around the power

to add a piece of trim around the power

to add a piece of trim around the power leaver so I stopped at the grocery store

leaver so I stopped at the grocery store

leaver so I stopped at the grocery store and picked up a container of bean dip

and picked up a container of bean dip

and picked up a container of bean dip the empty container is exactly the right

the empty container is exactly the right

the empty container is exactly the right size and with just a little cutting and

size and with just a little cutting and

size and with just a little cutting and two pieces of double-sided sticky tape

two pieces of double-sided sticky tape

two pieces of double-sided sticky tape and now it’s right behind the power

and now it’s right behind the power

and now it’s right behind the power later our last step is to mix the

later our last step is to mix the

later our last step is to mix the electrolyte I’m using about two gallons

electrolyte I’m using about two gallons

electrolyte I’m using about two gallons of tap water and that fills the

of tap water and that fills the

of tap water and that fills the container up halfway to make the water

container up halfway to make the water

container up halfway to make the water more conductive we’ll be using this

more conductive we’ll be using this

more conductive we’ll be using this crystal drain cleaner because it’s a

crystal drain cleaner because it’s a

crystal drain cleaner because it’s a hundred percent wide this stuff is so

hundred percent wide this stuff is so

hundred percent wide this stuff is so dangerous and so potent that we’ll only

dangerous and so potent that we’ll only

dangerous and so potent that we’ll only need a quarter of a teaspoon and extent

need a quarter of a teaspoon and extent

need a quarter of a teaspoon and extent to the entire solution now we can secure

to the entire solution now we can secure

to the entire solution now we can secure the control board in place connect the

the control board in place connect the

the control board in place connect the plug to a power source and test it out

plug to a power source and test it out

plug to a power source and test it out let’s make sure the power lever is

let’s make sure the power lever is

let’s make sure the power lever is pushed fully forward before the switch

pushed fully forward before the switch

pushed fully forward before the switch is turned on now the system is powered

is turned on now the system is powered

is turned on now the system is powered and you can see that if we gently pull

and you can see that if we gently pull

and you can see that if we gently pull the lever back the light begins to glow

the lever back the light begins to glow

the lever back the light begins to glow dimly and if we pull it all the way back

dimly and if we pull it all the way back

dimly and if we pull it all the way back it increases to full intensity the

it increases to full intensity the

it increases to full intensity the switch is a kill switch and will cut the

switch is a kill switch and will cut the

switch is a kill switch and will cut the power to the system in an instant the

power to the system in an instant the

power to the system in an instant the main purpose of this contraption is to

main purpose of this contraption is to

main purpose of this contraption is to regulate current to our electrical

regulate current to our electrical

regulate current to our electrical devices adding just a little power to an

devices adding just a little power to an

devices adding just a little power to an angle grinder will cause the device to

angle grinder will cause the device to

angle grinder will cause the device to spin very slowly but pulling back on the

spin very slowly but pulling back on the

spin very slowly but pulling back on the lever will increase the power until it

lever will increase the power until it

lever will increase the power until it reaches full speed the control panel has

reaches full speed the control panel has

reaches full speed the control panel has this loop of black wire that allows us

this loop of black wire that allows us

this loop of black wire that allows us to monitor the amperage in high power

to monitor the amperage in high power

to monitor the amperage in high power applications like the arc welding

applications like the arc welding

applications like the arc welding project you can see that if we pull back

project you can see that if we pull back

project you can see that if we pull back on the lever the current climbs higher

on the lever the current climbs higher

on the lever the current climbs higher an interesting observation is that the

an interesting observation is that the

an interesting observation is that the voltage is pretty much constant through

voltage is pretty much constant through

voltage is pretty much constant through the entire cycle the system can handle

the entire cycle the system can handle

the entire cycle the system can handle extremely high electrical loads and in

extremely high electrical loads and in

extremely high electrical loads and in contrast it can also make a table saw

contrast it can also make a table saw

contrast it can also make a table saw turn at a snail’s pace pushing forward

turn at a snail’s pace pushing forward

turn at a snail’s pace pushing forward on the lever increases the electrolytic

on the lever increases the electrolytic

on the lever increases the electrolytic resistance and as a result the equipment

resistance and as a result the equipment

resistance and as a result the equipment slows down or comes to a full stop well

slows down or comes to a full stop well

slows down or comes to a full stop well now you know you can control electricity

now you know you can control electricity

now you know you can control electricity with water and a bit of drain cleaner

with water and a bit of drain cleaner

with water and a bit of drain cleaner remember that this has the power to kill

remember that this has the power to kill

remember that this has the power to kill you and that’s why it’s called the scary

you and that’s why it’s called the scary

you and that’s why it’s called the scary AK if you liked this project perhaps

AK if you liked this project perhaps

AK if you liked this project perhaps you’ll like some of my others check them

you’ll like some of my others check them

you’ll like some of my others check them out at the king of random calm

out at the king of random calm

out at the king of random calm [Music]

”

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