Good warning on the wear factor. I'll go with a 3dSolex HardCore with an Everlast (Ruby or Sapphire) nozzle, and the feeders are upgraded, so I am told that should avoid any issues. That said, it likely won't be a dead on match for the CC.
John
As long as you ain't ruining a good core just for the sake of experimentation. And, yeah, it is nice that the S5 has the abrasive ready feeders.
I am having fun with Zytel at the moment and will be reporting results here as well.
Man, these new filaments are expensive.....
I hope I'm not practising bleeding here, but I got the hardcores to print the nylforce with is also nylon/cf,so they should hold up. If I wear out something, it should just be the nozzle, which in my case is replaceable.
Yeah, I hear you on cost. That was the main reason for my request for a sample. If it makes the difference and I can justify flowing the cost to a client, then it's great to see the advance. I'll look forward to seeing how you make out with the Zytel. It sounds like getting the printer to play nice has been a challenge.
J
@JohnInOttawa: You could consider requesting MarkForged sample parts here: https://3d.markforged.com/request-sample-part.html - this is "just" their usual keychain sample in Nylon and Nylon+continuous Carbon Fiber, but it helps to get a feel for the material, and you can print something similar on other printers with other materials.
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Good suggestion! Done.
J
Just that you know, those won't be Onyx Parts, but pure Nylon and Nylon+CF.
For getting Onyx Parts, I would suggest either contacting MarkForged directly, or getting parts printed through 3DHubs or similar.
While we do have a MarkForged printer, we use it almost exclusively for in-company stuff, and anyway shipping costs to Canada would be more than the part's worth probably, so I fear I can't help you out here unfortunately.
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@P3D, I appreciate your help! While you're a long way away, your perspective as an active user of markforged onyx is valuable.
I did ask Markforged if they could provide a pure Onyx part, no go unfortunately. I am told that they will send a nylon and an onyx/CF reinforced part, so we shall see what shows up.
I'd like to know more about your experience with the Markforged, but as that would be somewhat OT, may I PM with some questions?
Cheers
John
Any way I could donate polycarbonate part(s) for this testing? I'm really interested in how the different materials compare. As far as Onyx printing I have heard through the combat robot community that Endbots is quite reasonable for commissioned Onyx prints.
I'm happy to take input on an appropriate test model and will share the STL for that model once it's finalized. Now, I am not a test lab, so apart from maybe bringing in a force gauge (I'm thinking a 500# limit should do it), I don't want to create the impression that this is going to be high science or engineering.
But now you've given me an idea, there is a proper materials lab at the nearest university and I may still have a friend or two there. If I can set that up then I'll happily accept parts printed in your preferred material.
Hmmm. What are the odds I can find an engineering student interested in testing a whole bunch of things to destruction? Nah, they'd hate that...;-)
J
Edited by JohnInOttawaHey that sounds like a great idea!
You might want to have a look at THIS thread and THIS one. @gr5 has done a lot of work testing different materials and has built a machine for testing them. But you may gain some ideas on how to do your tests.
Keep in mind that changing print temps and layer heights can affect your results.
This is a bit off topic but You might also want to look at other aspects of the prints other than just strength. Most of the time these reinforced materials are used for there mechanical properties. This normally means some sort of tolerance is also involved. So measuring see the dimensional accuracy is also another interesting comparison that could help someone decide what's the best material to use for there application. I also find that some of these filled filaments can have quite bad stringing. If your printing a mechanical part with holes for fixtures then this can be an issue also.
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Thank you @Labern! I have reached out to George to see if I can extend from his work in any way. I won't presume to have his level of test capacity or knowledge, but if I can at least make what I do relatable in some way to his work, perhaps it will add to the body of knowledge.
I also agree that there are many facets to what makes a material right for a job. I have heard from another member here that some of the characteristics that make for an excellent matte surface finish may resulting in something too rough for regular skin contact. I don't know yet how I will evaluate that. I am thinking about setting up a block of soft pine and seeing how much sawdust I can raise with the surface of each printed part. High texture might be very desirable for rough service parts where maintaining grip in wet or greasy conditions is key, whereas braces or other body contact parts might need something different.
WRT to dimensions and stringing, here's where I am throwing myself on the mercy (or knowledge base if you will) of the group and your post is an excellent example of what I was hoping would happen. While I can't guarantee I'll have the capability to do the kind of testing everyone requires, the chances of me getting close are better with this kind of input.
Much appreciated!
John
@JohnInOttawa I know this is an old topic, but if you still have some Xstrand to print, we could do some flexural tests for you for free. We print rectangular specimens 4” long. .5” wide, .125” thick. Metric equivalents are fine. Larry.peel@tamuk.edu. I know there is published data out there, but more test data is always good.
we are at a small university that has some reasonable test equipment. We usually conduct tensile and flexural tests.
Edited by orangepeel
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kmanstudios 1,120
Are you waiting for the CC core to come out before moving forward? I hope so because I believe that stuff is very abrasive.
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