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Topic: Bench power supply suggestions (Read 5901 times) previous topic - next topic

larryd

#15
Dec 27, 2016, 06:38 pm Last Edit: Dec 27, 2016, 06:49 pm by LarryD
Thank you rpt007.

I use "Black on Bright White Laserable Acrylic Sheet", many other color combinations are available. Comes in 1/16 and 1/8" thickness.
These are often used for name tags, signage etc.
You should be able to get this from Engraving supply shops.

Edit
I ordered some of these in several thicknesses, no coloured core though.
http://www.banggood.com/170x300mm-G10-FR4-Epoxy-Resin-Sheet-Glass-Fibre-Board-Plate-0_51_523mm-p-1111475.html?rmmds=search

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Watcher

Quote
I ordered some of these in several thicknesses, no coloured core though.
This might sound dead obvious to most people here but I am a bit behind when it comes to panel making.

How do you get from this  to the picture of post #10 ??

:)

larryd

#17
Dec 27, 2016, 08:20 pm Last Edit: Dec 27, 2016, 09:42 pm by LarryD
That material has no color core so then text will be matt black.
As mentioned, there are acrylic sheets available with a color core.



Here are similar panels:


You design the layout with programs like Sketchup or AutoCAD.
Print the 1:1 layout on paper, confirm spacing with actual components.

With a hobby CNC machine, use bits as seen in post #4, import the drawing file to the CAM program then cut the panel.
I use BLUE set to 64 thou and RED to 20 thou.


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Watcher

Can you recommend a good hobby cnc machine?

larryd

#19
Dec 27, 2016, 08:51 pm Last Edit: Dec 27, 2016, 08:53 pm by LarryD
Mine is 25+ years old, maybe try Sparkfun.

Also, this might be of interest using laminated paper.

http://forum.arduino.cc/index.php?topic=219747.msg1601329#msg1601329



See attached PDF for using Sketchup.


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tinman13kup

Ok, I get the front and back panels, but what about the outer casing?
Tom
It's not a hobby if you're not having fun doing it. Step back and breathe

Boardburner2

I had four of these power supplies sitting around for 15+ years gathering dust.

I had similar for many years., unused.

On power up the some of the output caps blew.

How was it for you. ?


TKall

Wow, that's nice work LarryD.  Thnks for the info, I had no idea how these items were made.  I looked at the Sparkfun cnc machine and it seems to be a pretty good deal for a beginner.  Is there anything you would suggest before I pull the trigger on this one?  https://www.sparkfun.com/products/13882


larryd

What's nice is you can cut out any shape you can draw. :)

The software to control the machine is very important.
My CAMtool control software is poor, but it does accept files created in AutoCAD and SketchUp so that makes up for things.

As with any purchase look at several different offerings before you settle one one.
Before you buy, take a look on YouTube for examples what others are doing.

I think there are CNC forums out there.

Hints:
When cutting, with the tool, X Y and Z speed must be matched to the material you are working on, i.e. wood, acrylic, fiber glass composite, aluminum, ABS etc.
Also, the speed of the rotary cutting tool and bit type is very important.

I have not gotten into laser cutting yet, maybe some day.

Things can get dusty/messy. ;)
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larryd

#26
Dec 28, 2016, 06:43 am Last Edit: Dec 28, 2016, 06:51 am by LarryD
The bed size is important, mine is 22"X22".
Most things I work on are within 16X16"

Edit:
With a little imagination you can come up with interesting designs.



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TKall

I have AutoCAD 2015, is it not standard for cnc machines to accept AutoCAD files?

larryd

#28
Dec 28, 2016, 07:05 am Last Edit: Dec 28, 2016, 07:25 am by LarryD
I am not sure what is standard for CNC machines, I just know what my machine takes.

I got AutoCad 2016/17 before they went to the yearly subscription version.

I plot the drawing to a .plt file and the CAMtool software works on that.

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TKall

I was thinking that there has always been a lot to know but knowledge has never been as accessible as it is now.

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