Thread: 3D Printing of Parts

Originally Posted by Roverlord off road spares

I went to that link and then looked further at that companies other links on Youtube where looked at a video using that machine to make a cup cake, the finished result was not really that good a quality. There were imperfections in the out side. There are lines in the finish showing up in the viewing surface. It did not look near as good as an extruded product.

Pretty sure those parts would be injection moulded rather than extruded, the finish quality is then as good as the inside of the mould. Everything I've seen from a 3D printer has the same lined finish, funnily enough they look just like they had been built in layers. Much like metal parts that have been sand cast, there would be a fair bit of finishing required to get an acceptable appearance, don't know if that's even possible with plastic surfaces other than by using fillers. I wouldn't think there was a technology available to produce a low-volume part such as a p38 binnacle at an econimical cost.

More than 10 years ago I taped together the remnants of my RRC binnacle on the outside, sanded the inside with a commercial version of a powerfile to get a good 'key' and fibreglassed the inside with a couple of layers of 4 oz woven and epoxy.

All good today.

I used to do fibreglass as an earner at the highest level, so this approach is not ideal for a novice, but it works.

cheers, DL

This might cost a bit:

Watch the government 3D-print a Shelby Cobra replica

Originally Posted by p38arover

This might cost a bit:

Watch the government 3D-print a Shelby Cobra replica

A Shelby Cobra with an electric motor? Nah, I'll have the 429 thanks. Actually that video is 4:29 long, spooky.
Also there is a lot of work going into getting a good finish on that 3D print.

There are some around which don't try to replicate past cars

Is this the design for the first road-ready 3D-printed car?

Steve

I printed a mount for my GME UHF to go in the roof console of my D2 with a $700 printer. The cost of printing is pretty tiny since the fill pattern of the part gives it a really low density. The big thing was designing the part. I went through about 6 design iterations before it worked properly. It took about 6 hours to print the final version but this is on top of the several attempts of each previous version.

The thing you don't initially realise is that you can't print the same part which has been injection moulded. But it did work eventually and it is still in my car nice and secure. This is about 1.5 years later

Originally Posted by POD

A Shelby Cobra with an electric motor? Nah, I'll have the 429 thanks. Actually that video is 4:29 long, spooky.
Also there is a lot of work going into getting a good finish on that 3D print.

I think the 427 cross bolted SOC or DOC would be a better option

Originally Posted by Ancient Mariner

I think the 427 cross bolted SOC or DOC would be a better option

Pretty sure the original Shelby had a 429 though. The yanks were doing this at the same time the Poms were making sports cars with engines that would fit in an old lady's handbag. Oops, is this OT?