If you can buy it from a catalogue, buy it, don’t build it. 2 US $400
Strategies Don’t be lazy – design it yourself –that way you get what you want, or at least asked for. 3 But get the WS to check a sketch first for manufacturability. Get as much right as possible first time, but allow for mods.
Find 10 things wrong with this job request 1.No date 2.No charge code 3.Who is Dave? Contact details (room, phone #) 4.No idea of urgency 5.Material not specified 6.Thickness not specified 7.Quantity not specified 8.Depth of 5 x 5mm recess not specified 9.They can’t easily make a 4.37mm hole 10.They can’t make a square recess with a milling machine 5
Which Material? Which of these W/S metals are not “pure ( >99%) metals? –Brass, copper, aluminium Which of the W/S materials would you use for, 1.A cryostat for liquid nitrogen/helium? 2.A sample holder for cryogenics 3.A good electrical insulator for T<200˚C 4.An electrode holder for high temperatures? Which metal would you not use for vacuum? Which metal is the most expensive? 20
Drawings Hand drawings are fine Ruler is good for straight lines! Use grid/graph paper To scale is best Sketch, front, top, side views for clarity (conventions) Specify ID, OD, threads, material If frequent user, consider CAD ( eg SolidWorks) 28
Acknowledgements Many diagrams and info from, “Building Scientific Apparatus” JH Moore, CC Davis, MA Coplan, SC Greer (new copy ( 4 th edition) ordered for library) 29
30 Table of Contents 1. Mechanical design and fabrication 2. Working with glass 3. Vacuum technology 4. Optical systems 5. Charged-particle optics 6. Electronics 7. Detectors 8. Measurement and control of temperature Index.
3D Printing For personalised, custom-made lab equipment. Requires a 3D design- solidworks 3D printer- School of Architecture and Design.
Solidworks The final design is sent as a.stl file to the printer. The design is printed by slicing the design into 2D digital cross sections and depositing the materials layer-by-layer. Materials used include thermoplastics eg. acrylonitrile butadiene styrene, polycarbonate, polylactic acid. A 3D Computer Aided Design (CAD) software used to create a model. The design starts with a 2D sketch and is extruded to give a 3D object.