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 Healing L502E
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 Return to top of page · Post #: 1 · Written at 10:53:55 AM on 11 February 2017.
Tallar Carl's avatar
 Location: Latham, ACT
 Member since 21 February 2015
 Member #: 1705
 Postcount: 1574

I have two of these sets in fairly reasonable condition except for the Grills and two missing Knobs. I have sent one of the grills and a knob to a friend that has offered to 3D print some for me. I will be posting before and after photos so you can see if its feasible. Comments welcome.

Healing L502E Radio
Healing L502E Radio
Healing L502E Radio


 
 Return to top of page · Post #: 2 · Written at 11:39:17 AM on 11 February 2017.
Vintage Pete's avatar
 Location: Albury, NSW
 Member since 1 May 2016
 Member #: 1919
 Postcount: 1993

Hi there,
I met a guy out at Eastern Creek who was right into 3D printing. He was an Engineer and he showed me some 3D parts he had made .I was amazed! The material was as light as a feather and you can then use it for a Plug to make a mould and stamp out as many as you want. The parts he showed me were head light rims and one plastic mudgaurd.

,pete


 
 Return to top of page · Post #: 3 · Written at 1:28:09 PM on 11 February 2017.
Tallar Carl's avatar
 Location: Latham, ACT
 Member since 21 February 2015
 Member #: 1705
 Postcount: 1574

Yes I think its the go. I am thinking of learning how to do this as I can see its probably going to be useful.


 
 Return to top of page · Post #: 4 · Written at 10:46:07 PM on 20 February 2017.
Vintage Pete's avatar
 Location: Albury, NSW
 Member since 1 May 2016
 Member #: 1919
 Postcount: 1993

Carl,
Hi, there was this link on google news l think, regarding 3d printers and like you I to have an interest in the topic because I can see it has many possibilities for the future in manufacturing . Plus other benefits that people are not awake to yet.

Anyway this clip was saying how in the future this will have a positive effect on the way we buy things and there wont be a need for shipping as many items by Sea or Air anymore,, because you will place an order for your part etc etc and this will printed in the country you live in .Probably by people running small out let shops where it is printed and then the item is finshed off and ready for the customers to pick up, Even though the original country you bought the item off maybe America or China ,,no shipping across the world took place.!
Interesting stuff and a interesting concept,

All the best Pete,
Im tyring to find that link again


 
 Return to top of page · Post #: 5 · Written at 7:18:22 AM on 25 February 2017.
Tallar Carl's avatar
 Location: Latham, ACT
 Member since 21 February 2015
 Member #: 1705
 Postcount: 1574

Well people I have two new knobs and a cad design for the grills , they look pretty cool at the moment. Pics on the way.

Healing Grille and Knob
Healing Grille and Knob
Healing Grille and Knob


 
 Return to top of page · Post #: 6 · Written at 9:39:35 AM on 26 February 2017.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4342

Quite some time ago, I did make comment on the American Radio Forum that a particular horrid shaped bit of die casting that had done what it does, could be cut out with a CNC or printed.

Metal printing and fusing / melting / bonding it all together is getting there and will get less expensive as it develops. There is no reason why those clear(ish) plastic badges on Kriesler sets, that are rarely not broken or missing cannot be easily reproduced, preferably in a better material.

Plastics were at one point considered the "wonder material", as you could easily make things in all shapes & sizes. It has now, as we are seeing, not the ultimate thing. Plastics like that which made "Barbi Dolls", coil formers and a myriad of other things are now decomposing.

This has not only caused a rethink in the formulations, but is proving a conservation nightmare. Some of these plastics create Hydrochloric Acid as a decomposition by product & it just happens to be the catalyst for further decomposition.

"Pot metal" aka "Die Cast". Comes in various alloys of varying amounts of all sorts of metals, that give an easy to form alloy. Unfortunately some of this cheap & nasty stuff, has a habit of self destructing & Zinc & moisture are often involved. Zinc is one of several metals that either form whiskers and exfoliate when they decompose blowing the item apart. I have a turntable from the 40's here that is a write of, as the housing of the gearbox is made from it. It looks like a tortoise shell, with an effect like lifting floor tiles.

Marc


 
 Return to top of page · Post #: 7 · Written at 12:36:12 PM on 26 February 2017.
Vintage Pete's avatar
 Location: Albury, NSW
 Member since 1 May 2016
 Member #: 1919
 Postcount: 1993

Should be happy with that.
It really is amazing what a 3D printer can do,,,,pete


 
 Return to top of page · Post #: 8 · Written at 7:22:46 PM on 22 March 2017.
Tallar Carl's avatar
 Location: Latham, ACT
 Member since 21 February 2015
 Member #: 1705
 Postcount: 1574

Well guys I do have the grilles and knobs in my hot little hands.

3D Printing Of Radio Spares
3D Printing Of Radio Spares
3D Printing Of Radio Spares


 
 Return to top of page · Post #: 9 · Written at 9:53:16 PM on 22 March 2017.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6349

There's no doubt that the printing is quite accurate though how will you end up with a smooth finish on the items?


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 10 · Written at 10:50:03 PM on 22 March 2017.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6012

If it were me, for a smooth smooth finish I would try the lightly lubricated graduated wet and dry technique I use to recover faded plastic cases and cloudy dial lenses, followed by Autosol liquid metal polish to add the lustre and I would use a practice piece first.


 
 Return to top of page · Post #: 11 · Written at 11:34:50 AM on 23 March 2017.
Flakes's avatar
 Location: Adelaide, SA
 Member since 27 February 2010
 Member #: 630
 Postcount: 392

They look like a very good start. Just need to "Finish" them up a bit. The only comment is the colour of the Grill, Need to find some Cream / Antique White paint that will stick to it.

I have the Battery version of that set sitting beside the bench at the moment. I was put off recapping it because they layered all the parts in on top of each other. Defiantly not friendly to the serviceman....


Dan


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
Valve radios, They just don't make them like they used to

 
 Return to top of page · Post #: 12 · Written at 1:35:48 PM on 23 March 2017.
STC830's Gravatar
 Location: NSW
 Member since 10 June 2010
 Member #: 681
 Postcount: 941

Dy-Mark make Plastic Primer for priming plastics such as polypropylene, PVC & vinyl, but not suitable for polyethylene. I have a can of this and it provides good adhesion for the right plastics.
There used to be a special automotive finish primer that put down a thick coat for covering minor imperfections - I forget what it was called but it should make a second coat after the Plastic Primer. Rub down with wet & dry then apply the finish coat.
A lot of elbow grease required required I think.
3D printers seem to be at the level of resolution of the dot matrix printer. No doubt 3D will improve.


 
 Return to top of page · Post #: 13 · Written at 4:46:53 PM on 23 March 2017.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6349

Spray putty.


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 14 · Written at 7:57:47 AM on 28 March 2017.
STC830's Gravatar
 Location: NSW
 Member since 10 June 2010
 Member #: 681
 Postcount: 941

That's the stuff - AutoOne have it on special at the moment in 400g aerosol cans, along with various other primers including an all surface primer that might suit 3D print plastic.


 
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