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enclosure suggestions


 

On Tue, Jan 31, 2017 at 01:28 am, Richard Andrew Knack wrote:
Just make sure the PLA stays away from anything that gets hot

Rich, you are right. PLA should not be heated above 50C. I am not sure, if there is any critical point in my built, where this can happen. I think the heatsink at the rear could get pretty warm. So I made the hole bigger to keep a gap between the heatsink and the plastic.

I also use ABS for temperature critical parts, but at the moment I only have black and natural ABS and I wanted the case to be in a trendy color.

PETG can resist slightly higher temperatures than PLA, but I would not put it into a 60C plus environment. Of course I cannot give any warranty that the plastic case survives the next 50 years, but for me it is just a fun project and if I have to build another case in 2 month, I don't have a problem with it. In fact I love to build that things and the more often, the more fun HI




Jack Purdum
 

That's very cost effective, I would say. Good work!

Jack, W8TEE



From: Helmut OE4HDS <hs@...>
To: [email protected]
Sent: Tuesday, January 31, 2017 2:55 AM
Subject: Re: [BITX20] enclosure suggestions

On Mon, Jan 30, 2017 at 01:48 pm, Jack Purdum wrote:
I know next to nothing about 3D printing, but what would you estimate the case cost to produce?
It depends on the filament you use and how much you pay for it.
I used green PETG and blue PLA. For the PETG I paid €36,- per kg and for the PLA I paid €20,- per kg. That makes about €6.10 for the green parts and about €0.50 for the blue parts. A few cents will be added for the knobs.
So if you use cheap PLA for all parts, it should be around €4,- to €5,- for the plastic. I never calculated energy cost, but should be less than €0.50.



 

All the public libraries in my town have 3d printers for anyone to use, perhaps that is worth looking into.


 

All the public libraries in my town have 3d printers for anyone to use, perhaps that is worth looking into.


 

Just make sure the PLA stays away from anything that gets hot, since it has such a low melting point (PLA parts left in a hot vehicle in the summer time tend to warp and sag, for example). That is one reason I use ABS exclusively.

Rich
KC8MWG


On Tuesday, January 31, 2017 3:01 AM, Helmut OE4HDS <hs@...> wrote:



On Mon, Jan 30, 2017 at 02:19 pm, Richard Andrew Knack wrote:
Was that done in OpenSCAD? I'd be interested in knowing what settings you used for the hole positions, text, etc.
?Rich, that was done in OpenSCAD. To be honest, I am not very familiar with that. I used the script from the ultimate box maker and changed it via try and error so that it fits my needs.
I attached the file to this post (hope attaching it works).
I set the size of the box to a absolute minimum (at least I think it is) to get all the knobs, display and sockets in. Clearance to potis is pretty small though, but should work.



 

On Mon, Jan 30, 2017 at 02:19 pm, Richard Andrew Knack wrote:
Was that done in OpenSCAD? I'd be interested in knowing what settings you used for the hole positions, text, etc.

?Rich, that was done in OpenSCAD. To be honest, I am not very familiar with that. I used the script from the ultimate box maker and changed it via try and error so that it fits my needs.

I attached the file to this post (hope attaching it works).

I set the size of the box to a absolute minimum (at least I think it is) to get all the knobs, display and sockets in. Clearance to potis is pretty small though, but should work.


 

On Mon, Jan 30, 2017 at 01:48 pm, Jack Purdum wrote:
I know next to nothing about 3D printing, but what would you estimate the case cost to produce?

It depends on the filament you use and how much you pay for it.

I used green PETG and blue PLA. For the PETG I paid €36,- per kg and for the PLA I paid €20,- per kg. That makes about €6.10 for the green parts and about €0.50 for the blue parts. A few cents will be added for the knobs.

So if you use cheap PLA for all parts, it should be around €4,- to €5,- for the plastic. I never calculated energy cost, but should be less than €0.50.


 

For anyone into 3D printing, check this out: . This is what I am using to make the knobs for my Bitx.

One thing I found is, if you are making a knob for a "D"-shaped shaft, the "flat depth" is the amount the flat is LESS than the shaft diameter. So, if you have a 6mm shaft, and the diameter from the flat to the edge is 5mm, then the value for "flat depth" would be ONE (1). Took me a bit to figure that one out. This one has all kinds of possibilities outside the Bitx project, too!

Rich
KC8MWG


On Monday, January 30, 2017 5:52 PM, Richard Andrew Knack via Groups.Io <ihc73scout2@...> wrote:



Sehr gut, Helmut! Was that done in OpenSCAD? I'd be interested in knowing what settings you used for the hole positions, text, etc. - I haven't been able to figure out how to get the "ultimate box maker" add-on to work in OpenSCAD.

Rich
KC8MWG


On Monday, January 30, 2017 5:05 PM, Jack Purdum via Groups.Io <econjack@...> wrote:


I know next to nothing about 3D printing, but what would you estimate the case cost to produce? It look very nice!

Jack, W8TEE



From: Helmut OE4HDS <hs@...>
To: [email protected]
Sent: Monday, January 30, 2017 4:27 PM
Subject: Re: [BITX20] enclosure suggestions

Not finished yet, but I think it's ok.
Knobs have to be printed and sockets for mike and PTT have to be installed.
I think, I will shorten the pins of the potis. Otherwise Knobs would be too deep. And I will color the text black.









 

However, I did find isolation supplies for the IRF510, so I was able to mount it to the metal housing of the case with a little heat sink compound.


 

So I ended gutting an old PC PSU and building an enclosure with it.? I have to be honest, it wasn't worth the effort.? The aluminum was thick and difficult to drill through and I could not get the knobs where I wanted them to be.


 

Sehr gut, Helmut! Was that done in OpenSCAD? I'd be interested in knowing what settings you used for the hole positions, text, etc. - I haven't been able to figure out how to get the "ultimate box maker" add-on to work in OpenSCAD.

Rich
KC8MWG


On Monday, January 30, 2017 5:05 PM, Jack Purdum via Groups.Io <econjack@...> wrote:



I know next to nothing about 3D printing, but what would you estimate the case cost to produce? It look very nice!

Jack, W8TEE



From: Helmut OE4HDS <hs@...>
To: [email protected]
Sent: Monday, January 30, 2017 4:27 PM
Subject: Re: [BITX20] enclosure suggestions

Not finished yet, but I think it's ok.
Knobs have to be printed and sockets for mike and PTT have to be installed.
I think, I will shorten the pins of the potis. Otherwise Knobs would be too deep. And I will color the text black.







Jack Purdum
 

I know next to nothing about 3D printing, but what would you estimate the case cost to produce? It look very nice!

Jack, W8TEE



From: Helmut OE4HDS <hs@...>
To: [email protected]
Sent: Monday, January 30, 2017 4:27 PM
Subject: Re: [BITX20] enclosure suggestions

Not finished yet, but I think it's ok.
Knobs have to be printed and sockets for mike and PTT have to be installed.
I think, I will shorten the pins of the potis. Otherwise Knobs would be too deep. And I will color the text black.





 

Not finished yet, but I think it's ok.

Knobs have to be printed and sockets for mike and PTT have to be installed.

I think, I will shorten the pins of the potis. Otherwise Knobs would be too deep. And I will color the text black.




 

I understand that most won't buy a 3D printer just to make a case for this project, and that the prices are coming down and eventually about any serious experimenter will own one, but for now it's kind of an exclusive club and when someone posts a question about an enclosure and the reply is to 3D print one, I chuckle.? I can just imagine someone owning a 3D printer and it not occurring to them to use it for this project!


 

I did not buy my 3D-Printer just to print an encloser for the BITX40 ;-)

As I already have a printer, I thought I should give it a try for the BITX.


 

I already had the 3D printer - built it myself about four years ago. It's really not difficult, and as for expense, it's one of those projects where you can source the parts yourself and spread the costs out over time. Mine is a Mendel90 with a frame made of 1/2" MDF, liberally painted with polyurethane to keep moisture out. Steppers are Wantai brand, and inexpensively sourced off EBay, as was the Melzi controller board. The single most expensive part was the hot-end, and you can get cheap ones of those as well (though from personal experience I don't recommend it - go with an E3D!). A 3D printer can be dead useful for a lot of things!

Rich
KC8MWG


On Sunday, January 29, 2017 9:43 AM, Steve Robertson <bobs_otr@...> wrote:



Buy a $59 radio and then buy a 3D printer to make a case, that makes me chuckle.? We'd all love to have a 3D printer, but for now I think most of us are looking for more off the shelf or easily fabbed with common tools solutions.
.
I would love to use an old rig case, but they aren't usually available by themselves, they always seem to want to sell them with the chassis and want too much money.? An old HeathKit HW-101, Yaesu FT-101, Tempo One, etc. case would be fun and have tons of room, heck we could probably build an antenna tuner in.
.
Plastic seems the cheapest for most, I'm wondering if that thin metal stick on tape used in HVAC would afford RF protection if stuck inside of a plastic enclosure?
.
/Steve, KA0NEB



 

I also 3D printed mine. Did only the bottom part of the case and the front panel so far. I used the scad file of that thing

Scroll down to the Experimental Area to go to the description of the scad file and how to use it.

You can modify the file to get any size of the case you need and every cutout on the front and back panel can be setup in the scad file. So the printed panels already have all the holes for the screen, the potis and the sockets.

I will rty continue the printed case soon even though I have issues with my arduino. Have ordered a spare nano and while I wait for it to arrive, I will print the whole case and try to get all the wireing and mounting of all the potis and sockets done.

Wil post a picture, after I finished my case.



 

Buy a $59 radio and then buy a 3D printer to make a case, that makes me chuckle.? We'd all love to have a 3D printer, but for now I think most of us are looking for more off the shelf or easily fabbed with common tools solutions.
.
I would love to use an old rig case, but they aren't usually available by themselves, they always seem to want to sell them with the chassis and want too much money.? An old HeathKit HW-101, Yaesu FT-101, Tempo One, etc. case would be fun and have tons of room, heck we could probably build an antenna tuner in.
.
Plastic seems the cheapest for most, I'm wondering if that thin metal stick on tape used in HVAC would afford RF protection if stuck inside of a plastic enclosure?
.
/Steve, KA0NEB


 

Considering that the power supply, which uses switching technology that can produce RF energy, is in a metal enclosure is capable of shielding that energy, I would guess that enclosure would also prevent RF energy from getting in.


 

I 3D printed mine. There's one on Thingiverse that was designed by one of the other members of the group. Front and back panels are solid, so the openings have to be drilled/cut. I printed out a bezel for the LCD and, after cutting a corresponding opening in the front panel with a 3/16" diameter 2-flute milling cutter (I have a bench top mill), I glued the bezel into the opening with acetone. I still have to drill the rest of the openings and mount the parts. Will post photos when it's all done.

Rich
KC8MWG


On Sunday, January 29, 2017 8:02 AM, Ken <chase8043@...> wrote:



Nice job on the PCB case Glenn. If you can build one, why buy a case?

73

Ken VA3ABN

On Sun, Jan 29, 2017 at 4:48 AM, Glenn S <glenn.vk3yy@...> wrote:
Hi David,
I couldn't find an enclosure the right size, so I made one from single sided PCB, am pretty happy with it:
Cheers,
Glenn VK3YY.