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Blog [Pi IoT] Alarm Clock #20: Finished Enclosure II
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  • Author Author: fvan
  • Date Created: 26 Aug 2016 7:07 PM Date Created
  • Views 2525 views
  • Likes 4 likes
  • Comments 11 comments
  • fvan_piiot
  • piiot
  • enclosure
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[Pi IoT] Alarm Clock #20: Finished Enclosure II

fvan
fvan
26 Aug 2016

  • Wood
  • Acrylic
    • CNC
    • Manual Router
  • Result

 

No time to go out on a Friday night, only a couple of days before the challenge's deadline. Instead, I decided to annoy the neighbours by doing some final milling and sanding ... So, as promised, here's the enclosure for the second control unit. Unlike the alarm clock, this unit makes use of a touch screen and keypad for user input, on top of the voice commands. Because of these components, it is also quite larger than the alarm clock. It will be sitting on the cabinet.

 

Here's what I've done with it and how I got there ...

 

Wood

 

This unit was too large to cut solely with the CNC. The board to cut from was so large I couldn't clamp it normally and had to resort to alternative methods demonstrated below. The CNC was used to mill the slots in the front and top panel, just the maximum supported width of my CNC.

To actually cut the different panels out of the board, I used the classic method: the table saw. Using the router, I manually made the grooves, trimmed the pieces to fit and rounded the edges.

 

imageimage

 

Using some wood glue and clamps, the pieces were attached to each other. This unit required a lot more manual work than the alarm clock, but was clearly faster for some actions, though not always as accurate as the CNC. I suppose accuracy in manual actions comes as experience is gained.

 

Acrylic

 

CNC

 

Milling acrylic using the CNC required a few attempts before achieving clean results. During the initial runs, the mill's feed rate was too low, causing the acrylic to heat up too much, melt and stick to the milling bit. This in turn, caused damage to the piece because of the molten blob swinging around.

 

By increasing the feed rate to 1000mm / min, with passes of 0.7mm, the mill travelled fast enough to cut without melting, resulting in clean cut pieces, as demonstrated below.

 

imageimage

 

Manual Router

 

To compensate for possible inconsistency issues due to the manual cutting and assembling of this enclosure, the side panels would have to be measured and drawn individually for milling. A much easier and faster approach was to glue a slightly larger, roughly cut piece of acrylic to the sides and use a flush trim router bit.

image

 

The flush trim bit has a bearing which follows the shape of the wooden enclosure it is rolling on, while cutting the acrylic to the same shape.

 

Before and after a manual flush trim:

imageimage

 

A bit of sanding will ensure everything is smooth and soft to the touch.

 

Result

 

So, after all the sanding, glueing, filling, milling, etc ... I showed it to the wife, and I was allowed to put it on the cabinet image

 

Here's the result:

 

imageimage

 

It's a bit of a pity the touch screen's border is black. I'm thinking I could get some white film to stick on the edges of the display, giving it a white border.

 

By the way, I feel it looks like a microwave or retro TV. Can anyone confirm or deny this?? image

 

 


image

 


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Top Comments

  • fvan
    fvan over 8 years ago in reply to Workshopshed +5
    I think I will put a picture of the inside of a microwave as screensaver
  • fvan
    fvan over 9 years ago in reply to gpolder +4
    The tools help, the skills come as you build more things I acquired a lot of tools when my father passed away, the rest was mainly purchased when working in the previous house and fixing things. If it…
  • balearicdynamics
    balearicdynamics over 8 years ago in reply to fvan +4
    Video of the finished product: kickstarter put before the product exists, you shown the product itself Demo of the product: 95% coherent with the original idea and something more, KS buckers usually receives…
  • fvan
    fvan over 8 years ago in reply to Workshopshed

    I think I will put a picture of the inside of a microwave as screensaver image

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  • balearicdynamics
    balearicdynamics over 8 years ago in reply to fvan

    Video of the finished product: kickstarter put before the product exists, you shown the product itself

    Demo of the product: 95% coherent with the original idea and something more, KS buckers usually receives something different from what they invested, mostly with less things

    Project blog progress: you got us the sensation that we was working aside with you and your tools; KS creators frequently post great schemes and the reason of the delay (1 yr delay is almost the standard)

     

    hahahaha image Enrico

     

    BTW: I chat with a friend just yesterday evening trying to strongly discourage him - you know my point of view ... - on trying to launch hist project on KS instead of doing something more serious. He told me that in effect ... He bought a 99$ nice product expecting it for the next month after the investment. He received the stuff about 18 months later and now he don't remember why he bought this product image image image

    Then ... Surprise! He sent me the link. It is a Raspi-like device, based on the concept of the PI2 but priced three times the PI3. Today this great innovation is on the market. I suppose just on the market place, maybe Piccadilly or LA pier hand-made Saturday market ? LoL

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  • fvan
    fvan over 8 years ago in reply to balearicdynamics

    What? How? image

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  • balearicdynamics
    balearicdynamics over 8 years ago in reply to fvan

    Frederick, you got more success than Kickstarter image

     

    LoL. Enrico

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  • Workshopshed
    Workshopshed over 8 years ago

    I confirm it looks like a microwave image Fantastic casing

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