Author Topic: 3D printing  (Read 37960 times)

Offline Joules

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Re: 3D printing
« Reply #100 on: January 16, 2016, 05:52:01 PM »
I've seen that little 5 axis machine before. It looks surprisingly good!

I already have a 4 axis setup for my X3. It seems logical to add a trunnion table type of thing to that....

Anyhow, I promised pictures:
I've done it as a link to a large JPG here http://www.caswa.com/images/forums/proto.jpg so you can zoom in and see the detail. The black part is from the injection mould tool we went on to make after we were happy with the fit of the part on the left which was machined from ABS.

The finish on the ABS part is perfect...

Very nice design work on that part PK, can you give me a clue on dimensions. I look to breaking complex designs up into smaller parts then reweld them back to single parts.  I assume some nice internal moulded detail so maybe produce this as two shells, inner and outer to get best surface finish on both sides.  I would love one of those 5 axis desktop cnc's, on my wish list if someone pays me an obscene amount for one of my designs.
Just get doing and make swarf, you can decide what its going to be later.   :thumbup:

Offline PK

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Re: 3D printing
« Reply #101 on: January 16, 2016, 05:59:51 PM »
Very nice design work on that part PK, can you give me a clue on dimensions. I look to breaking complex designs up into smaller parts then reweld them back to single parts.  I assume some nice internal moulded detail so maybe produce this as two shells, inner and outer to get best surface finish on both sides.  I would love one of those 5 axis desktop cnc's, on my wish list if someone pays me an obscene amount for one of my designs.

The black part was done on a commercial injection moulding machine using a tool made from tool steel. The tooling cost was about $AU2500 as I recall, which is pretty good, but still worth AU$100 to get the prototype machined first, just to be sure.

We've done two part tooling in silicone, you pretty much have to use a non gassing resin (ie anything cured with MDI is out of the question) unless your part geometry is very simple. 

Silicone molding is pretty easy to set up for. You can do it without any special tools, although a vacuum/pressure pot is really helpful.

Offline Joules

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Re: 3D printing
« Reply #102 on: January 16, 2016, 06:26:24 PM »
Yikes, only AU$100 for the 5 axis machining.  Thats really good value compared to 3D printing, not much in the cost, but a world of difference in quality. 
Just get doing and make swarf, you can decide what its going to be later.   :thumbup:

Offline PK

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Re: 3D printing
« Reply #103 on: January 16, 2016, 08:34:03 PM »
Sorry, I didn't answer your question.
One ISO standard beer bottle top for scale: