Introduction: Plastic Feeding bottle Cutter

I started learning Fusion 360 a couple of weeks agone and was looking for a cool envision to test what I had well-read, when I came across the Plastic Bottle Cutter. I saw a clump of designs, some commercial, others ones diy solutions but all had the same objective, to reuse the canonical plastic bottle by cutting into thin stripe of filament that could past glucinium used to necktie, weave and yet tow cars.

So I took that basic idea went on to localize the goals for this design, IT required to be portable, so that I could take with me when encampment, information technology had to be safe so that a small fry could enjoyment it, so no sharp edges or exposed blades, information technology should not hinge upon a foundation or other means of torque besides my hands, so information technology had to be ergonomic, it should embody easy to adjust the thickness of the stripes and finally it should be mostly printed, this was simply because I wanted to hone my skills.

Sol let's start the design.

Gradation 1: Basic Forge

I started past sketching the shape I though would be all but comfortable while minimizing the amount of formative I would have to usage. Once I had the of import material body (the center one) I offset it twofold, one by 0.4mm and one by 3.4mm. The interior shape will become the main body of the design and I extruded information technology by 155mm, this accommodates blank space for the hand to hold it and space for the leaf blade and its adjustment. The outer shape will become, shortly, a cover that will protect the blade, the users and provide and easy way to adjust the size of strips of plastic.

Step 2: Ergonomy

With the basic shape extruded I went on to make a more ergonomic grip. So I sketched four 20mm circles, placed side by side and used them to cut the main body, leaving a bit of space 'tween apiece cut to accommodate the shape of the fingers. Next added a small 1mm fillet around the cut area to remove the sharp angles and make it to a greater extent comfortable.

Step 3: Lanyard

At this moment I realized that I should add a hole for a laniard, then I did honorable that. A small 4mm hole, that I then chamfered, this removes the high angles that could cut the laniard. Notice that I use a chamfer not a taenia simply due to the angles, if I practical a fillet there would be little parts of it that would have a angle superior to 45º, these can be tricky to print, so to head off them I use chamfer instead of a taenia when these occur .

Step 4: Bottle Expansion slot

Directly I needed a slot for the plastic bottle to slide done, so I made a 3mm time slot with 55.10mm of elevation. These values were eyeballed to what I thought would work and in the goal worked truly well. I then proceeded to chamfer organic structure each roughly by 1mm except in the slot I had right cut. In fact on my first pass I really also chamfered the slot, but afterwards I had some issues with chamfers in new places, soh I went back and distant them from the slot and applied them later in the design

Step 5: Blade Receptacle

The of the essence disunite of a plastic bottle cutter is the vane and I needed a place to put through it in, so I created a small rectangle with 0.8mm of height that I then used to cut into the body, until the muddle was almost at the end of the curved wall, I stayed roughly 11mm away from cornerstone. I chamfered this and the previous slot, by 0.5mm, Eastern Samoa these were going to comprise invisible past the cover I was going to put on top of it, I rattling didn't need much more.

Ill-use 6: Cover

The main body was almost done, indeed I went begun fashioning the cover, I extruded the initial design and cut a 4mm rounded slot through it. This is were the plastic bottle testament be placed, and the height at which the cover is placed will determine the thickness of the strips

Step 7: Alteration Screws

Next I toyed with a twosome ideas before settling with a design that needed 3D printed screws, so I successful slots on the sides of enshroud to oblige the screws I would have to design. Again I just eyeballed the dimensions, if these didn't oeuvre I could easily return and conform them, something I had to bash a few multiplication, ahead I formed with the ones that you see here, so props to Fusion 360 history and parametric design it's my first constant quantity design and I don't I will ever make up able to go back.

It's time smooth out some parts of the cover, so I applied a 2.5mm fish filet to the places were the plastic bottle would pass through and a 1mm cant to the to the side of meat slots, notice that I intend to photographic print this part standing upbound, so IT should no take whatsoever supports.

Footprint 8: Screws

The screw was a real pain, Autodesk you read this please, please throw US a best way to make custom shape duds.

At this point in time I wasn't surefooted that I could design a working hump that didn't require supports and was strong enough, so I created a new intent but to experiment with it. In the end, after many, umteen tries I settled connected the pursuit access.

First I created a coil with the dimensions that you can germ in the screenshot, I then sketched a bigger trigon happening the base of the coil, the purpose of this is to create a design that does not involve keep going for impression. I then applied a sweep of that trigon using the initial coil as my path and guide rail. The shape wasn't perfect but with correct tolerances information technology should (and it did) work. And so I had a new coil with a 90º angle that could be easily printable, so I hid the original one and and then placed a cylinder at the center of the one I had just created, thence creating the screw, now I needed a tap to cut back incarnate from the intense body. I duplicated the screw and proceeded to musical scale it past 1.15 in the X and Z axis vertebra (attention this was modeled with the default modeling predilection Y up, indeed if you are replicating this and your orientation is Z heavenward, the axis you will to scale should comprise X and Y),this gave the tap I penury, I reasonable cut a bit of reincarnate from bottom and from the pass to ensure that I had the adjust shape for the ends of the tap.

Step 9: Thumbscrew

With the beg done, I proceded to land up the ass, by devising a thumbscrew, adding a cylinder to ensure that it would press against the cover I had designed and finally cutting the excess from the top.

Step 10: Tape recording the Meander

As I had made this tap on another conception file I had to transport it to the design file were I had the main body and here I encountered an unexpected difficulty, I could not imitate paste IT, in fact it took me quite while and bit of reading to obtain a way to import the tap happening to the another project. This involves fashioning the tap a component copying it, and the finally being able to spread it onto to the separate project, so once again Autodesk, could you make this less cumbersome? Pretty please?

So I managed to import the wiretap, I and so revolved it and duplicated it(this is important, you need to duplicate and not mirror or else you will need two diverse screws one left threaded and one right thread).

With them roughly in place, I used them to cut the main body.

Step 11: Print It

And with that final step, IT's finished.

I printed in the design in PLA at 205ºC, 3 spinning top and bottom solid layers,3 perimeters and 30% infill (perhaps a bit of overkill but it works).

To use the design simply place a steel from a olive-sized box cutter inside the expansion slot, slip up the cover thus that the open slots are facing up and ribbon the screws into their holes, cut the bottom of a plastic bottle, place the bottle in the pinnace and start turning the bottle while forcing information technology down in the mouth, it should start cutting into the fictile, as soon as a plunder of formative appears, bu grab it and offse pull it until you've hand-hewn the whole nursing bottle. To adjust the size of the plastic strips, unscrew the cardinal thumbscrews swoop the cover to the correct height and tighten the thumscrews.

So here is the design for the piece of tail and for the plastic bottle cutter, you only need to download them and print them:

Screw

  • http://a360.co/2k3tITS

Plastic bottle cutter

  • http://a360.co/2jljwWl

Make up the First to Portion

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