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  • Users: HDS
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  1. HDS

    process to to make a small plastic tank

    What are the options for making a small tank? I want to make sure I have considered all the options for this design. Here are the details: 500ml 2psi internal pressure needs to be water tight contents will be liquid cleaners (originally sold in PD jugs) 5000 parts a year The processes I know...
  2. HDS

    supplier recommendation for inexpensive plastic valves?

    I know a lot about valves for gases but need something different for my next project. Can anyone recommend a supplier of inexpensive small plastic valves for water? Only needs to hold 1 PSI. Manual or electrical operation are both options.
  3. HDS

    what is a "soft touch" material?

    What properties gives a coating a "soft touch " feel? There has to be more to it then just a low coefficient of friction. How do you define and "soft touch" so that you can evaluate different materials?
  4. HDS

    source of durometer refence kits

    One of the places I used had a nice set of durometer references. In addition to having several samples of different durometers the side of each sample had sections of different thickness. This was great for deciding how something would feel in a given thickness and durometer. I have been trying...
  5. HDS

    Energy policy

    Something from today's news. ==================================== Today is the day for action on thermodynamic reform There are many great issues facing our nation. Just a few years ago we were faced with a great recession. Many at the time thought that we could not escape it but thanks to the...
  6. HDS

    Best way to record a programs display

    I have been using Snagit to record the display of one of our programs running an instrument to trouble shoot errors. It works great, even does compression on the fly, but the problem is that it will only record for about half an hour. Is there anything similar that will record overnight?
  7. HDS

    I need a WIKI that is not a PITA

    We have a WIKI in engineering. It works great for sharing information. Anyone can update it and tracking changes is automatic. However, it is a pain to use. Doing everything with an arcane markup language by hand is very tedious. I would like to put something like the WIKI on the floor for work...
  8. HDS

    ST5 does not install on XP

    Just in case you were going to try it. Like Siemens said it really does not install on XP.
  9. HDS

    Is it a pressure vessel if it contains a solid instead of a liquid or gas?

    I have a small chamber where powder is compressed under a few thousand pounds of force. There is no liquid and the air can escape. All of the PC stuff I have looked at like the CE PED seems to apply only to compressed liquids and gases but not solids. Do I understand them correctly?
  10. HDS

    Unbrako

    Unbrako has been known for years as a reliable supplier of high strength socket head cap screws from the USA to the ASME, ANSI and ISO standards. At one point they were owned by SPS but they appear to have been sold off. Neither webpage mentions the sale and I can not find anything in a Google...
  11. HDS

    compressed air quick disconnects used around the world

    In the US we have several different options for quick disconnect fittings for compressed air lines. Is there a common standard used in other countries? If not what is the most common interface to compressed air fittings? I doubt that the NPT pipe threads found on US fittings are easy to find...
  12. HDS

    Knife edge flanges in PV?

    I have been designing vacuum vessels for a while and am started to work on some pressure vessels. In vacuum systems flanges with metal gaskets and knife edges to dig into the gaskets are common. The conflat is the most popular one...
  13. HDS

    Best parctices for Co-Ops

    We are excited to finally be getting some Co-Ops in our engineering department. We are getting prepared with some assignments for them and want this to be a good experience for both of us. What is the advice of everyone here on the best practices for effectively using Co-Ops? I'd like to hear...
  14. HDS

    digital printing on sheetlmetal parts

    Screen printing has long been the best solution for printing things like logos and text on shetmetal parts like panels. Is there a digital printer that is competitive with screen printing for high mix low volume work? I have found stuff for flat bed printing for signs or high speed marking of...
  15. HDS

    Quality assurance systems / accelerated life cycle testing

    Back in the day I worked at Motorola. They had a top notch Quality Assurance system including on Accelerated Lifecycle Testing all as part of Six Sigma. Now I am at a smaller instrument company that has grown to where we need a QA and ALT program. I don't want to reinvent the wheel but I don't...
  16. HDS

    ST3 launch events

    http://am.siemensplmevents.com/?elqPURLPage=4150
  17. HDS

    Solid Edge productivity summits

    Since many of the folks on this forum are not on the Solid Edge mailing lists, here is the web page for some free training they are putting on. http://am.siemensplmevents.com/?elqPURLPage=3363
  18. HDS

    Hydrophobic material to stop frost

    Is there a material or coating that is hydrophobic enough to prevent the formation of frost on cold objects? One of the challenges with any cryogenic system is that there are always parts that are cool enough for frost to build up. The thing I am looking for is a foam insulation that would shed...
  19. HDS

    dust free refractory materials

    I am looking for a refractory material that is not dusty to the touch. Something like a piece of ceramic cookware would be perfect. I have scoured the web and talked to suppliers but have not found anything. The part is a disc 4" diameter x 1" thick with a hole in the center. I would like a...
  20. HDS

    profile framing systems

    I need the opinion of the ENG-TIPS community. What is the best T-slot Aluminum profile framing system? I am in the US and want to build benchtop size products in low volume. There are several systems out there (80/20, Maytec, Minitec, Parker ...) They all seem to be proprietary and do not...

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