Search results for query: *

Dave, Thanks for the Roark tip. Will look for it. Greg, I fully expect your estimate that the error will be tiny is right on the money … being new to this I need to burn some time assuring I am on the right track. Thanks Guys! Bruce

Greg, Those are about as impressive as it gets! But I was curious more at a basic day to day working level. I’ve been experimenting with smaller packages and seemingly getting plausible results, but I was looking more for a model(s) I could duplicate, run and compare my results with “known...

Are there any standard 3D models with material and load data that can be downloaded for testing of computational accuracy of FEA tools? (Or some equivalent?) Best regards, Bruce

Hi WK, Structural, mix-expanding-curing. Further research points needing a foam that cures to 12-16 lbs / cubic foot. (~300psi) I need to find a couple sources that can provide test samples to hone this in tighter. Thanks! B

Brian, Excellent site ... this looks like quite a good eng materials resource. Thank you for taking the time to share it :^) B

Can anyone recommend a good supply house that can deliver medium & high density PU foams? I spent 5 hr yesterday surfing/calling and only found one guy interested in making a sale, but he had to go find someone that could answer questions about their foams’ performance specs. I scan chemical...

Yep, the X1E has it ... plus about another K in cost over the unit designed without it. https://www.matterhackers.com/store/l/bambu-lab-x1e-3d-printer/sk/MEQ5KJ70?rcode=SC_X1E&gad_source=1&gclid=Cj0KCQjw0Oq2BhCCARIsAA5hubWkkRuJt8n6QA83EznVQZ1FEzevX79a_p7qbo0Bfx7zB70yfjLI1UwaAudIEALw_wcB...

Thanks for your comment! Interesting. Does it have a bare RJ-45 jack? Another source (that could be wrong) said it was WiFi only. The PRUSA has a WiFi module that can be popped off from a vid I saw.

I have a friend that has a PRUSA and swears by it. In my first look, I like that you don’t need to have it tied to the cloud. Bambu has some attractive features/pricing, but from my reading, you can’t run w/o being exposed to the Net. That’s a non-starter for my customers. Can’t blame them based...

…. have you had good results with for early stage part design visualization? Speed, accuracy, materials Pros & Cons for it? Best regards, B

I wish I could be more specific, but confidentiality is up against my beans/cornbread stop. One of the basics I can say is very fast cycle times are necessary. Ovens/dips block/contaminate the secondary operations as well as potential for heated product damage during transfer in/out. The...

Mint, Watlow has some great custom work there. I will give them a call Monday to see where they stand on sizes/pricing. Part of the issue is my customer wants to keep as much as possible proprietary… that said, possibly integrating some off the shelf or semi custom products could satisfy both...

Yes, the tricky part with a metal fabric is the electrical conductivity with the resistance wires. Adding an electrical insulator to either the fabric or wire slows heat xfer. (But this is worth pursuing as I know nothing of what is available on the market. I'm thinking this problem has already...

I have a heating project that needs a flexible application of continuous heat as a two dimensional secondary operation takes place. To make the tool easy to construct, it would be helpful if the material could be sewn with a high temp Kevlar thread. The physical forces of tension in the fabric...

Ed, TPU is an interesting material (after a little reading). Pretty strong for a film. Thanks for the recco! B

Pro, DiaEarth and 200u glass beads are two that were off my radar, but sound like potentially good fits. The glass beads might be a tad easier to keep out of the pump. Hmmm… Appreciate the vacuum parameter, that was in the back of my mind. I need to get some materials on the bench and get...

Ed, My first run at ‘angular sands’ turned up “lava sand” which is both angular as well as porous. That would be a candidate as it appears to have 50-60% less weight compared to common sand. That would save some handling headaches … be interesting to see what grade or screen sizes are...

Mike, The company that asked me to look into this likely will not have a big volume to do, but like anything else, the efficiency of how well you can do the technical side, the more upside potential there is as it unfolds. I could see a couple hundred units a month to begin. It’s pretty much a...

Mint, Yes heat is required in the secondary and the amount required risks kinking/sag etc. Filler beads are interesting if there would be a way to create a locking effect like CPro suggested. For example, if you poured the cavity full of a silicone rubber and let it cure you could perform the...

CPro, Using atmospheric pressure to lock the shape via friction is really intriguing. Cost and tech are straightforward. Release would be fast. That ticks all the boxes elegantly. I like it. Have you ever experimented w this for sand types/vacuum level used? I can see where variables such as...