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Homemade Plastic Bending Machine - Bend-O-Matic 1000



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I've talked about bending this cover out

of Plexiglas in a previous video and

then I came back and said that I wasn't

going to do that that goes on my

controller here but once I get an idea

in my head I just can't leave it alone

and even though I'm not going to make

one for this project I thought it would

be nice to learn how to bend that stuff

so I gathered some pieces together and

thought I'd make a jig and try my own

testing if you go on the internet

there's tons of guys using breaks and

flame and heating wires and on toasters

and all kinds of crazy stuff anyway

unless I get into it myself I'm not

going to know just how easy or hard it

is so I've decided to make the simplest

thing first which is just a hot wire bed

that will go in this slot this is just

scrap with it I'm starting with this is

the only thing that I think I'll need is

nichrome wire and that's what I'm going

to set down on that groove now this is

nothing new

like I said other guys are doing it's on

the Internet and that's what gave me the

idea so I'm not going to reinvent the

wheel but when it comes time to making

some sort of a break or jig to keep the

bends more accurate that's where the

experimentation will probably come in

anyway let's see if I can get some kind

of a heating bed together other people

that have seen make this heating bed are

using aluminum you Channel and I don't

have any of that I've got the angle

stuff but I've got a another idea might

be simpler yet I was trying to think of

a material that I could use to protect

the wood from the heating element from

the heat you know and I thought about

this stuff this is aluminum tape so I

thought I'd do a little test here and

see how it performs with

I'm just going to put a piece on this

scrap wood here we had a open plan

it is making a bubble up a little bit

but we're at 200 degrees according to

those it cools down quite rapidly

I seen 250 that might just be because

I'm measuring the flame but it seems

pretty resistant

let's peel the tape off and see what's

under it so it looks like it messed with

the glue a little bit but other now the

wood is warm but not hot I think this

will work just fine maybe two layers of

it it's not going to have a direct flame

like this test so I think it'll work

just fine for protecting the wood around

the heating element and it will be easy

to shave - yep I believe all use this

and start with the base this is 19 by 17

so that's the size it'll be because

that's the size of the wood that I have

and the bender is even going to be

smaller I've got a couple scraps of MDF

here this is half-inch and when I put

them together on this board it leaves

about the the width of the slot that I

was thinking about so I'm going to trim

these down to 17

we'll go 17

you

I got thinking about it maybe I will

make this thing hinge kind of like a

little break and I'll use the width of

like a pencil she's a beauty I think

that'll work just fine

I'm going to use this single bladed

screw for a guide for the wire on each

side I'll put one here in one year

hopefully and then we'll use this I hook

for the anchor for this side for the

wire

behold the Bendel Matic 1000 yeah it's a

little crude but I think she just might

work so I ended up making sort of a

break you know I said I wouldn't but I

ended up doing that and there's the

spring there it should work this uh this

wire actually grows about a quarter-inch

actually want to eat it up so you need

something take up that slack she's tight

and I'm using these screws to guide the

wire again this is all stuff that I've

seen other guys do this is nothing that

I've invited so I'm not taking any

credit for this at all I just want to

recreate it and see if I can get some

good bends and then the head of my

screws goes in these holes here so

there's no interference there and if

need be I can put another clamp up here

or just a big piece of wood but yeah so

what am I going to power this with

behold an old battery charger 12 volt 55

am

I should light her up so let's plug her

in and give her a try to see what

happened what could possibly happen on

this one rather than just put it on the

spring I have a piece of the lead

sticking out here so we're gonna go

without you know

yikes time to plugged it in so we're

plugged in and immediately I smell a

little burning smell

we're 12 volt 2 a.m. let's crank her up

that's 12 volt 10 a.m. still not glowing

it's gonna take quite a bit to get that

thing to glow yeah it might be a little

bit yeah alright let's go for broke

let's go for the 55 a.m. hmm

man it's how they did it we getting any

glowing yet yep yeah yeah starting to go

down yep

okay I unplug that I'm gonna plug it in

and watch the spring how much it takes

up see that point that's a good

quarter-inch I put a little piece of

that rug gripper stuff you know I glued

it onto this break bar or holder or what

are we going to call

maybe 200 degrees Fahrenheit down in

there maybe let's get some plastic and

see what happens so let's do a practice

run with this stuff

what some try to do a precision bound

here I'm gonna mark at two inches down

on each end okay I've got two little

marks on the end there

I'm going to try out about two inches in

so this isn't real super thick this is

maybe an eighth inch thick something

like that

I don't expect I'm going to be able to

bend too thick of material but just I'm

just not getting the heat out that I'd

hoped need more out Bridge amperage

Scotty and some wing nuts for that might

be nice - mm-hmm

little wing time to plug her in here we

go

so I've got the little mark that I made

on the plastic right over as I'm looking

down right over the heating element I

thought about putting it right in line

with this wood but I think it would be

better if it was right in the middle of

that crack so again it's right on the

heating element itself and I'm just

gonna kind of monitor this and what I

think it's ready I'm going to go for it

and then I've been told to that when you

bend it you need to actually go past 90

because it will have a little bit of

spring back so for that I'll just use

this when the time comes so the heating

element has read it's not glowing red

again I need more amperage or volts and

I chose to do this with DC power you

could do this with AC power but in my

mind it's more dangerous with this you

know I can touch the leads and not get

hurt so that's one of the reasons why

I'm doing it this way so we'll just wait

a few minutes here

it's kind of hard to measure plastic

because you know you're you're looking

down through it so is this accurate I

don't know let's lift it up here and see

if it's giving any yeah feels like it

wants to go guys should I go for it yeah

well no let's go for

or personally

we'll just hold her up there

eventually I think I need I'll plug this

tonight what a cool that's the thing

it's gonna take a little bit

experimentation to figure out how how

far past 90 I have to go with that

spring back you know this letter don't

see why I am here

I'll be there guys whoa looks like we

might actually have something here does

look like a 90 Wow look at that and it's

right on my dots too you can see my

little line there

it doesn't look discolored or bubbled or

anything

I thought it might but it doesn't

there's the other side of it there that

radius is right on that sharpie mark one

I'm pretty impressed with that guys

see how close it is kind of hard to tell

with that but close enough for man

I mean it's plastic I'm just gluing two

inches for giggles no reason yeah I was

pretty happy with the way that bout

right on that seam there time did

exactly what I expected so that's good

this opens up a lot of possibilities for

future projects you can make a lot of

neat little things with the bent

Plexiglas even the thin stuff I don't

think I would Bend very thick stuff on

this if I was to bend like quarter-inch

or something like that like summit said

in the comments of the other video you

may have to be groove it you know score

it with a router or something like that

and what I could do is I actually cut

the pieces out in my CNC router and then

use a V bit to square it if I wanted to

Bend thicker stuff but I could see where

you could make some really neat looking

equipment cases or just decorative type

pieces using this yeah this I think is

really going to open up some

possibilities for

making new things really do I like

trying different materials I've always

liked Plexiglas but you know how do you

attach it I've always done it with the

aluminum and holes and you know riveting

together but this is a whole new thing

for me and now that I know I can do a

pretty acrobat I mean I'm sure I can't

get it to the sixteenth but I can bend

things to the eighth inch at least and

with practice better and if you consider

the radius and all that stuff I don't

see any reason why I can't make some

really neat projects with us I don't

know yet what the trick is to how long

to let this set I know you have to let

it sell for at least a minute or two

that's why I'm yakking on here but you

don't want to go too soon I'm pretty

sure of that but the nice thing about

this bender and the 50 amps or the 12

volts I'm finding it doesn't get so hot

that you know you have to do something

or it's going to burn your work I mean

there's no rush and using a

certainly if you let us up for another

minute it's not going to discolor or

bubble up your plastic it just heats it

very slowly you know so that's probably

a good thing really although I think I

could use a little bit more amperage if

I had like 75 this is a 55 male 12 volt

maybe seventy seventy five amps would be

a little bit better let's play with this

and see if it's ready to go

she's ready it feels ready let's do

now that it's so easy to buy them it's

ridiculous so plug it thinking you need

a button or foot switcher zoom right in

there just a little bit of past 90

all right that's that's great

stuck down to that a little bit really

because of the hot glue I used on that

look at this is the one I just did I

just can't get over that and this is

similar to the case that I was thinking

about Benin or that CNC cover I don't

think I'm going to do that though

because uh I think I'm just going to

leave it alone but looks like I might

have gone too far on this one now that

I'm looking at it looks a little bit

better yeah but yeah guys it is possible

so there you go again I didn't invent

this stuff I'm just doing what I've seen

other guys do and it works it really

works without much effort at all I've

got about a foot of usable wire here and

it takes about 12 volt and 50m just so

you get an idea with nichrome wire so

thanks for watching leave me your

comments let me know what you think I

should do with this machine now that

I've got a bill and what features or

what would you do differently to improve

on this idea so thanks for watching

don't forget to give us one of these and

we'll see on the next one thanks for

watching the bike man