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  • Users: alansimpson
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  1. alansimpson

    feature constraint problems

    Using SE ST and I am having problems with feature sketches failing. Seems to be happening all the time now and I cant figure out why. Problem is when I go to edit feature I am finding sketch and dimensions changed brown and cant be edited. Must be re-drawn or re defined. Even this doesn't work...
  2. alansimpson

    Self stripping connector for multi-strand mains flex

    I am doing some research to access self stripping connector for mains cable similar to below: http://www.google.ie/images?um=1&hl=en&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial&channel=s&tbs=isch%3A1&sa=1&q=scotchlock&aq=f&aqi=&aql=&oq=&gs_rfai= Can anybody name any other products...
  3. alansimpson

    Switch windows to another open model

    Using SE ST100 for a while now. When i have to switch between active models that are open I must use View / Switch windows and then back to Home. I am finding this quite tedious and irritating considering previous SE and every other windows based application has Windows menu always available...
  4. alansimpson

    Visible edge line weight in model view

    Hi there. I'm using SE ST. Is is possible to change visible edge line weight or thickness in model view so that they appear heavier on screen or when exported as image? Thanks
  5. alansimpson

    Publish models for download in range of formats

    I wish to publish on the web a set of 3D models where a used can download in any format they wish, within reason. I have no idea what system end user will have and what they will be used for, CAD or STL etc. Is this possible? Anybody know of a third party who can provide this service? Thanks
  6. alansimpson

    Calorific testing of electro. mechanical device

    Could anybody recommend a device or system to measure amount of heat energy given off or absorbed by a machine which usually runs under normal room conditions. This device would precisely measure small amount heat (mJ.) given off or absorbed by electro-mechanical device running in air, gas or...
  7. alansimpson

    PDF Translation problems

    I have been publishing my SE drawings as PDF for manufacturing for an no. of years. Sometimes end user cannot view certain symbols like diameter or geometric symbols or they get translated as other fonts. Not knowing what version of Adobe reader end user has or what fonts they have, is it...
  8. alansimpson

    Machinable thermally insulating foam for containing liquid nitrogen

    I am doing some cryogenic experiments and need to make some special shaped baths to contain liquid nitrogen for short time. I have to be able to machine to complex shapes to fit around apparatus. Have been using a rigid foam(PU I think, for building insulation) about 100 mm thick and cutting...
  9. alansimpson

    Thread cutting with die

    Would anyone know of a guide to hand cutting threads with die. Small metric threads M2-M12. Specifically needing information on blank diameters, how to start thread and how to keep die straight. Thanks.
  10. alansimpson

    Toroidal coil

    I wish to make a toroidal coil. I don't know where to start. Is it possible to make a helix sweep through a circle? See attached link for example...
  11. alansimpson

    Move part command not available

    Move part command has been grayed-out in an assembly I have been working on. works in other assemblies. Cant work out why. Any insights? Thanks
  12. alansimpson

    Lubrication of special bearin

    I have made up a special bearing for a piece of test equipment comprising 2.3mm Tu carbide ball spinning on a hardened flat surface at 2000-4000 RPM. Surface hardened steel or Tu carb. Loading along spinning axis should be fairly low 1-5 N. Environment normal room conditions in lab. 20 deg...
  13. alansimpson

    Lithium ion battery below 1.5V

    I am doing some R&D work and I need to source some rechargeable batteries with a fast response time for pulsed output current. About 1 amp. Lithium ion seem to be best for our application however they seem to be available at 3V and over. Must be less than 1.5V and over 1000 mAh. Cant use...
  14. alansimpson

    Divide Truncated Icosahedron

    I wish to split a truncated icosahedron into two along facet edges. Please see attached image. Is this possible and how would I go about this? Thanks
  15. alansimpson

    High speed switching using reed switches.

    I am switching a 0.9 A current at 1V using reed switches and I am running into problems. Rotating wheel with 4 magnets on circumference 1)At high speeds (over 200 Hz) not switching. 2)Switch fails closed. The switch is rated for an 1 amp. Load is inductive so there could be surge current...
  16. alansimpson

    Noise measurement of equipment.

    I am working on the design of office computer equipment with a view to reduce noise level. I think noise levels would be 30-60 dBA. Not sure of frequency levels. I would like some advice on choosing a noise meter and what features to go for. There are many meters on the market ranging in...
  17. alansimpson

    Termination of an ultra low resistance circuit

    I need to make up an ultra low resistance circuit in a loop (below 40 micro ohms) with multi-stranded copper wire like Litz wire. I estimate total circuit length needs to be a around 400 mm. Based on this the litz wire needs to be a large cross sectional area. My major concern is the...
  18. alansimpson

    Low voltage DC power supply 5kW

    I need a variable DC power supply (0-100 V) to supply about 100 amps for some experiments. I have looked around and most seem sophisticated and expensive (over 5k) Anybody know of cheaper solution or is this only to be expected at this power level? Was messing around with car batteries and...
  19. alansimpson

    Cryogenic insulation

    I need to make up a cryogenic bath about 10 cm cubed filled with liquid nitrogen for some electromagnetic experiments. Ideally in an electrically insulating medium. One of the side faces of bath must be flat in order to allow devices inside bath to be in close proximity to external apparatus...
  20. alansimpson

    Ceramic machied components for ball bearings

    I would like to have custom axial thrust bearing made up in ceramic for non conductive reasons. Plastic not good enough. I know standard bearings are available however I need thrust washer flat without ball groove. It is easy enough to get ceramic balls however the thrust washer is proving...

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