Author Topic: Cetus3D 3D Printer  (Read 2968 times)

Offline PekkaNF

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Re: Cetus3D 3D Printer
« Reply #100 on: May 26, 2017, 10:57:31 AM »
Next thing you know you will be printting winnie the pooh, tigger and then Wallace and Grommit buttons.

Pekka

Offline DMIOM

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Re: Cetus3D 3D Printer
« Reply #101 on: May 26, 2017, 12:56:53 PM »
.....Wife is knitting a cardigan for very young offspring of a farmer friend - Ba Ba Blacksheep theme complete with picture but bemoaned the fact she couldn't find any suitable buttons - well print some.....

Andrew - just a thought - not sure how young the recipient is, but are they safe if chewed?

Dave

Offline awemawson

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Re: Cetus3D 3D Printer
« Reply #102 on: May 26, 2017, 01:30:30 PM »
Yes we thought about that  :thumbup:

This poor kid (not yet born) is going to start life in the rough in a caravan in a field while his parents try to get their barn built around them to house their herd of cattle. Family farm sold under them when parents died - house and barns gone to Yuppies and my friend left with 20 acres and the livestock with nowhere to house them or themselves. Life can be hard  :bang:
Andrew Mawson
East Sussex

Offline efrench

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Re: Cetus3D 3D Printer
« Reply #103 on: May 26, 2017, 01:35:28 PM »
If you print the buttons in ABS, you can use acetone vapor to polish them.

ABS sticks well to 3M painters tape, so a heated bed isn't necessary.

Offline PekkaNF

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Re: Cetus3D 3D Printer
« Reply #104 on: May 27, 2017, 03:42:15 AM »
That is a rough start for that family. I can only imagine how worried the parents are.

I was told that my mum put us all kids in the purpose build kids pen while she was working in the barn, farther was working in the woods and farm is allaways much work. The barn was evenntually coming appart and we have to move out for a winter....I hear it was a hard winter but that is not how I remember it. It was a new exciting place and I had not started the school yet. All the stuf explore. Spring came, and us kidds were helping as we could in the new barn building site.

I heard it was rough times, but to me it was an adventure. We had to make all the little we had to do. I remeber chippinng plaster out of used tiles and straighening nails to reuse them.


Pekka

Offline awemawson

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Re: Cetus3D 3D Printer
« Reply #105 on: May 27, 2017, 06:10:17 AM »
How did I ever manage without a 3D printer ? :clap:

Today our front gate, which is electrically operated, opened spontaneously. Now it's being doing this when it rains hard, and I'd tracked it down to the pedestrian entry keypad, which gives a closed relay contact to the controller to open the gate. As a temporary expedient I had removed the 12 v supply to the keypad so that it couldn't operate it's internal relay - BUT TODAY THE GATE OPENED  :scratch:

Investigation showed that water had entered, and there was a heavy rust streak on the plastic between the Common and Normally Open terminals that presumable was borderline able to conduct enough to open the gate.

I pulled it apart, cleaned it up and bench proved it all as working, but as well as giving it more shielding from weather, I wanted to spray the internal PCB with a waterproof 'con-formal coating' that is excellent at improving insulation in damp conditions. However it is also an effective glue, so it needs to be kept out of things that need to move, like the switches on the PCB that the external buttons operate. Now things like the edge connector, and a plug in I/C could be masked with masking tape, but those tiny little switches defied my banana like fingers, when it came to trying to mask them.

SO PRINT SOME COVERS - after all YOU HAVE A 3D Printer :lol:

Quickly knocked up a Fusion 360 model, printed them and the conformal coating is drying as I type this  :clap:
Andrew Mawson
East Sussex

Offline spuddevans

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Re: Cetus3D 3D Printer
« Reply #106 on: May 27, 2017, 06:48:26 AM »
Nice one Andrew  :thumbup: :thumbup:

Only problem is, once word gets around, everyone will be asking you for "a little favour". After all, you just have to push a couple of buttons and "Poof!!" the desired item magically appears  :lol: :lol:

Tim
Measure with a micrometer, mark with chalk, cut with an axe  -  MI0TME

Offline PekkaNF

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Re: Cetus3D 3D Printer
« Reply #107 on: May 27, 2017, 07:08:57 AM »
Pretty nifty!

Just out of curiocity: the nozzles on your "Hydroponic Pig Cooler" are they round orifice ones, or do they have a slit or flexible flapper?

Pekka

Offline awemawson

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Re: Cetus3D 3D Printer
« Reply #108 on: May 27, 2017, 09:30:32 AM »
Pretty nifty!

Just out of curiocity: the nozzles on your "Hydroponic Pig Cooler" are they round orifice ones, or do they have a slit or flexible flapper?

Pekka

The end cap that screws on has a very small round hole, but the cap traps another bit of plastic  that has a helical groove in it so that the water is already dizzy before it squirts through the hole. I presume that getting the water spinning aids the mist formation  :scratch:
Andrew Mawson
East Sussex

Offline PekkaNF

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Re: Cetus3D 3D Printer
« Reply #109 on: May 28, 2017, 02:57:55 AM »
Pretty nifty!

Just out of curiocity: the nozzles on your "Hydroponic Pig Cooler" are they round orifice ones, or do they have a slit or flexible flapper?

Pekka

The end cap that screws on has a very small round hole, but the cap traps another bit of plastic  that has a helical groove in it so that the water is already dizzy before it squirts through the hole. I presume that getting the water spinning aids the mist formation  :scratch:

Not sure if I follow, but that sounds morre like a structure made for metering a certain amout of fluid.

Normal short orifce (hole in the disc) or such has drawbacks if very small hole is made, small diametrs are hard drill/debur, thye clog easy and wear.

Longer restriction normally works better on tose accounts. But instead of long hole ususally a threaded hole is used. Like on oil metering orifices on some machine tools (I think brigeport table has that). In oil metering componenets are cheap: Taps of knwown accuracy are produced and set screws too. If the metering orifice blocks, cleaning it is a matter of openeing and closing it. Adjustment is easy: Choose diferent lengt of set screw,, precise location is not needed just lengh.

It still could have same priciple and retai ease of cleaning if ti is sort of groove on cylinder suface and pluggs to cylinder.

Or I may have got wrong altogether.

Pekka