Kumpula Machine Shop

Instructions for the users

What is the Machine Shop?

The Machine Shop provides manufacturing services that support the academic education and research at the Kumpula campus.

Where can I find the Machine Shop?

The Machine Shop is located at the basement of the Physicum building at the Kumpula campus. The porter can show you the way.

When the Machine Shop is open?

Monday to Friday 09-15 (from 9 AM to 3 PM). Please note the lunch break (11:00 to 11:30). The door is always locked, but press the button to get in.

Can I use the services of the Machine Shop?

Yes, you can. If you are a graduate student at Faculty of Science or an employee (teacher or research personnel) of Faculty of Science, including Helsinki Institute of Physics at the Kumpula campus. Limited services for other Faculties of University of Helsinki or for external users may be provided upon request.

In providing the support services, the Shop is operated in the following order of priority: 1) for studies and teaching at the Faculty of Science, 2) for research at the Faculty of Science, 3) for other units at the Kumpula campus, 4) for other units of the University of Helsinki, and 5) outside users.

The support services include manufacturing and design of mechanical parts of devices and facilities that are used in education and research.

I need a mechanical part, how do I get one?

Contact the Machine Shop personnel (Jukka Ukkonen) and agree to meet at the Shop. If this is your first-time visit introduce yourself and your project.

A production-order form must be filled for all mechanical parts that are manufactured at the Shop. Please fill in the pdf-form (link to pdf-form at end of the page) in electronic form (if possible), or at least save it in pdf-format in your own archives using e.g., Adobe Acrobat Reader DC (recommended), PDF-XChange (Windows), Preview (Mac OSX), or Okular/qpdfview (linux). Send the filled-in form together with attachments, to the Machine Shop via email (Jukka Ukkonen).

No parts will be manufactured or designed without thorough discussion with the personnel. Often there is a commercial product available that could fit to your needs with minor modifications. It is highly recommendable to use with standard mechanical parts as a starting point in the design.

If you are fluent with the professional 3-d design tools (e.g. Autodesk Inventor, Solidworks, Vectorworks, Microstation, Catia, Rhino3d, FreeCAD) you can send your design file as a 3-d model. Traditional 2d blueprints are also accepted, either in electronic form (.dwg or .pdf) or in print (A4 or A3 sheets). If you decide to bring both an electronic 3-d model and 2-d blueprints please note that the parts are machined preferably using the 3-d model. This is assumed if you have not explicitly agreed else.

If you are not familiar with any 3-d design tool, it might be worth putting some effort in learning a light-weight design tool like Rhino3d that includes a very useful parametric/algorithmic design tool, Grasshopper. Available both for Windows and Mac OSX, Grasshopper has a graphical programming environment with some resemblance to NI Labview.

In order to avoid compatibility problems that may occur with the proprietary file formats (dwg, etc.) please use the standardized STEP format (either AP203 or AP214) when sending your 3-d model files. The STEP-format (file extension .step or .stp) is an internationally standardized format used in large scale industrial projects (automotive and aviation). Note that the STEP-files are pure ASCII text files that can be edited if everything else fails.

If you need a complicated mechanical device that consists of separate parts please provide that information. It is recommendable to provide a separate 3-d model file (or a 2-d blueprint) for each component part, together with the main dimensions.

The 3-d models as well as the 2-d blueprints must be unambiguous, showing the geometry with possible symmetries, dimensioning, and tolerancing clearly enough. 

It is assumed that all the dimensions are given in mm, if not stated otherwise. This applies to both the 3-d model and to the 2-d blueprints. The latter are assumed to be drawn using the first-axis (European) projection. In order to avoid errors, please state explicitly the used projection and dimensioning units.

The universal language that is used in communicating the manufacturing details is the Geometric Product Specification (GPS), including as an essential part the Geometric Dimensioning and Tolerancing (GDT). The use of this universal language is supposed to guarantee that the mechanical parts made by different companies can be assembled into a smoothly working device (e.g. Airbus A300). It is highly recommendable to get at least some familiarity with the basics.

Please archive your design files and blueprints, you or your colleague may need them later. Also check that the manufactured parts and the archived design files or blueprints correspond each other within the required tolerances. This facilitates the design of the possible additional parts.