Tune's Home Page

Welcome to the humble home of Marcel Tünnissen or Teun as some Dutch friends call me sometimes.

Originally I come from Holland, but since September 4^th 2000 I have been living in Sweden. My nickname in Holland used to be Teun, but for a non-native Swedish speaker that sounds a bit as the Swedish word "tönt", meaning retard, though native speaker would think the nickname incomprehensible. Anyway you understand that I haven't been using my nickname so much anymore since I moved to Sweden... ;)

Here are some things that I like to do:

• My biggest hobby, or better my passion is finding and building polyhedron models. "What's that?!" People usually ask me. Well, the best way to explain is to show, so have a look.
• I like to spend my holidays hiking around in the countryside. Though I must admit that I haven't found much time to do this lately.
• A collection of pictures can be found at flickr

And yes that is all. It is not much, but I am happy with this little home. Reactions, remarks, feed back, all are welcome. Just send me an email. My username is "marcel", which should be added in front of "@tunnissen.eu".

Links to Friends

• Ernie
• Ulrich
• Pub the Cactus where I spent many cosy evenings with friends and live music when I still lived in Holland.

History

• Feb 10 2025: added more to page about Symmetry Orbits.
• Jan 31 2025: started with a page about Verheyen's 'Symmetry Orbits' here. Also some small updates on tetrahedra compounds. and cube compounds.
• Jan 20 2025: use drop-down menu at / remove most text from here. The goal is to move the text to a general page explaining terms related to compounds of polyhedra.
• Jan 10 2025: add explanation about conjunctive and disjunctive sub-compounds: here.
• Jan 08 2025: Updated compounds of tetrahedra here. The D3nxI and D6nD3n groups were partly mixed up. Also renamed some anchors on this page, used the word "axial symmetries" and cleaned up some formatting.
• Jan 06 2025: Updated compounds of tetrahedra. Added μ₃
• Dec 30 2024: Updated compounds of tetrahedra. Reorganised table and fix error for 60 | A5 x I / C2 | μ₈
• Dec 28 2024: Updated compounds of tetrahedra. Added 2n | D3n / C3
• Dec 27 2024: Updated compounds of tetrahedra. Added n | Dn / C2
• Dec 26 2024: Updated compounds of tetrahedra. Reorganised the table with cyclic and dihedral symmetries for rigid compounds.
• Dec 25 2024: Updated compounds of tetrahedra. Started with a table with cyclic and dihedral symmetries for rigid compounds.
• Dec 22 2024: Update compounds of tetrahedra. Add a table with cyclic and dihedral symmetries for rigid compounds.
• Dec 20 2024: Update compounds of tetrahedra. Add a table with cyclic and dihedral symmetries for compounds with central freedom.
• May 19 2024: Use degrees everywhere for cube compounds.
• May 17 2024: Update cube compounds and move to own directory. The interactive cube compounds show the angle and a title is used for all 3D models. Standard colouring is used everywhere and the compound where only one sub-compound is given a colour is removed.
• Apr 27 2024: Remove all VRML and X3D models.
• Apr 26 2024: Move all built cube compounds to one directory.
• Apr 18 2024: Remove camera distance parameter for all interactive models and update all pages that use the 3D player. This is a major update that includes JavaScript files and style sheets. You might have to do a full refresh, e.g. using "shift R" in Google Chrome. Also added the stellations of the rhombic triacontahedron as JavaScript models.
• Apr 09 2024: Add picture of subcompound of compound of thirty tetrahedra and add paper model for compound of ten tetrahedra and compound of twelve tetrahedra
• Apr 08 2024: Add paper model for compound of thirty tetrahedra
• Apr 07 2024: Add paper model for classical compound of five tetrahedra
• Dec 29 2023: Update here Remove previous 30 | A₅ / C₂ | mu₇. Nothing special really. Add a new mu₇ instead: one the is a compound of ten 6 | S₄ x I / D₄D₂ and add 30 | A₅xI / C₂ | mu₈.
• Dec 28 2023: Define angles for 60 | A₅xI / C₂ | μ₅ here and 30 | A₅ / C₂ | μ₅ and μ₇ here. The previous μ₅ was renamed to μ₆ for both.
• Dec 27 2023: Define special angles for 60 | A₅xI / C₂ | μ₂ μ₃, μ₄ and μ₅ here
• Dec 26 2023: Define special 40 | A₅xI / C₃ | μ₅ here
• Dec 25 2023: Define special angles for 40 | A₅xI / C₃ | μ₃, μ₄ and μ₆ here
• Jun 18 2023: Add paper model for Compound of Three Stephanoids and add link to Ulrich.
• Jun 17 2023: Add paper model for compound of eight tetrahedra and added a paper model for 52nd Stellation of an Icosahedron and removed a broken link.
• May 21 2023: Use algebraic angle for 30 | A₅ / C₂ | μ₄ here
• May 19 2023: Use algebraic angle for 30 | A₅ / C₂ | μ₂ here
• May 07 2023: Add special angles to compound of tetrahedra here
• Oct 30 2022: Added the 59 icosahedra as javascript models here and removed all VRML and X3D models.
• Jul 16 2022: Add new page about big siblings with with folded regular heptagons.
• Jul 09 2022: Updated Tetrahedron compounds. Added text for special angles of S4xI / D1C1
• Jul 09 2022: Updated Tetrahedron compounds. Added text for special angle descriptions of S4xI / C2 and S4xI / C2C1.
• Jul 05 2022: Updated Tetrahedron compounds.
• Jan 10 2022: Updated polyhedron of folded regular heptagons: Little Brother and Sister
• Jan 07 2022: Added a page of a toro crosso
• Jan 05 2022: Add a new polyhedron of folded regular heptagons: Brother and Sister S4
• July 11 2021: Added new page alternative deflated swissohedron and alternative deflated swissohedron
• May 10 2021: Added anti-prism base crossohedron to list of crossohedra
• May 08 2021: Added some crossohedral fractals to list of crossohedra
• May 03 2021: Added inflated Swissohedron Added add 3D lattice of crossohedra list of crossohedra
• May 02 2021: Added totally deflated Swissohedron
• Apr 26 2021: Added more helical crossohedra to list of crossohedra
• Apr 25 2021: Added 4-fold helical crossohedron to list of crossohedra
• Apr 24 2021: Added alternative deflated S4xI to list of crossohedra Added 6-fold helical crossohedron to list of crossohedra
• Apr 21 2021: Added model of Four-Fold Toro Crosso
• Apr 20 2021: Added {4} expanded to List of Crossohedra
• Apr 19 2021: Added {3} expanded to List of Crossohedra
• Apr 16 2021: Updated Added alternative version of deflated Swissohedron to List of Crossohedra and deflated Swissohedron. Also added the first helical crossohedron to the former.
• Apr 15 2021: Updated List of Crossohedra Added faceted versions of elongated crossohedra with S4xI symmetry
• Apr 14 2021: Updated List of Crossohedra Added crossolated Johnson J4 and a crown toro crosso.
• Apr 13 2021: Added a model of the deflated Swissohedron and add elongated_crosso-D5C5-r to List of Crossohedra
• Apr 12 2021: Updated: List of Crossohedra Fix typos and rephrase and add one new crossohedron with prism symmetry and the crossolated J3.
• Apr 11 2021: Updated: List of Crossohedra Add some more crossed crossohedra with prism symmetry, etc.
• Apr 10 2021: Updated: List of Crossohedra Add some first toroids and refer to Steward
• Apr 08 2021: Updated: List of Crossohedra reorganised tables and added partial faceted version for S4A4 symmetry.
• Apr 07 2021: Updated: List of Crossohedra with two pyramid based Crossohedra and one faceted tetrahedral based
• Apr 06 2021: Updated: List of Crossohedra with one more prisms.
• Apr 05 2021: Updated: List of Crossohedra with one more prisms.
• Apr 03 2021: Updated: List of Crossohedra with more prisms.
• Apr 02 2021: Updated: List of Crossohedra with prisms.
• Apr 01 2021: Start with a list of Crossohedra (no joke) List of Crossohedra
• Mar 31 2021: Add SW model of crossohedron with official Swiss cross to Swissohedron
• Mar 28 2021: Added Dual of Wenninger's 115
  Added Swissohedron
  Added Faceted Swissohedron
• Mar 27 2021: Add support for stencil buffer and background colour in URL link for off file service
• Mar 11 2021: Updated compound of 15 cubes with detail of small parts.
• Mar 02 2021: Added compound of five cubes.
• Feb 27 2021: Added alternative compound of five tetrahedra.
• Feb 25 2021: Added compound of four tetrahedra.
• Jan 18 2021: Added vZome link to tetrahedron compound: 8_S4_C3_mu3.
• Jan 17 2021: Fix typo in title of tetrahedron compound: 8_S4_C3_mu3.
• Jan 16 2021: Add 20 | A₅ / C₃, 30 | A₅ / C₂, 40 | A₅xI / C₃, 60 | A₅xI / C₂ and 60 | A₅xI / C₂C₁ to Tetrahedron compounds. Also fix a typo on that page
• Jan 11 2021: Started a page with built models of tetrahedron compounds.
• Jan 7 2021: Add special angle for 12 | S₄ / C₂ | μ₅ and rename previous μ₅ to μ₆ on Tetrahedron compounds. Also simplify some algebraic expressions for the angles and make them more consistent. Updated the description of 8 | S₄ / C₃ | μ₃
• Jan 6 2021: Fix typo for 8 | S₄ / C₃ | μ₃ and use algebraic expression for 24 | S₄ x I / C₂ | μ₆ and 24 | S₄ x I / C₂ | μ₇ on Tetrahedron compounds.
• Jan 4 2021: Add special angle 12 | S₄ / C₂ | μ₄ and 12 | S₄ / C₂ | μ₅ to Tetrahedron compounds.
• Jan 1 2021: Algebraic expression for special angle 12 | S₄ / C₂ | μ₂ Tetrahedron compounds.
• Dec 30 2020: Add special angle 12 | S₄ / C₂ | μ₃ Tetrahedron compounds.
• Dec 29 2020: Add special angle 8 | S₄ / C₃ | μ₃ Tetrahedron compounds.
• Oct 30 2020: Add page with new model of Compound of Fifteen Cubes.
• Oct 29 2020: More special angles and use header and show angle interactively for Tetrahedron compounds.
• Aug 11 2020: Add special angles mu6 and mu7 to compounds of tetrahedra with S4xI symmetry to Tetrahedron compounds.
• Aug 09 2020: Fix interactive models for cube compounds, Octahedron compounds and Cuboctahedron compounds. Broken by non-backwards compatible changes. Add compounds of tetrahedra (S4xI) with rotational freedom to Tetrahedron compounds.
• Aug 09 2020: Update Tetrahedron compounds: add special angle to S4xI.
• Aug 08 2020: Added compounds of tetrahedra (S4) with rotational freedom to Tetrahedron compounds.
• Aug 07 2020: Added compounds of tetrahedra (A4xI, S4A4) with rotational freedom to Tetrahedron compounds.
• Aug 02 2020: Add one tetrahedron compound with rotational freedom in Tetrahedron compounds.
• Aug 02 2020: Start with page about Tetrahedron compounds.
• Jul 26 2020: Add interactive models for Octahedron compounds.
• Jul 23 2020: Add interactive models for remaining cube compounds (rotational freedom).
• Jul 21 2020: Add interactive models for cube compounds with spherical freedom.
• Dec 18 2019: Add a new polyhedron of folded regular heptagons: Octahedral Hepta Saucer
• Dec 18 2019: Renamed polyhdron polyhedron of folded regular heptagons: Octahedral Trinja Star
• Dec 16 2019: Added a new polyhedron of folded regular heptagons: cubic trinja star
• Dec 12 2019: Added a new polyhedron of folded regular heptagons: tetrahedral trinja star
• Nov 11 2019: Added a new polyhedron of folded regular heptagons: Nemesis
• Oct 17 2019: Added a new polyhedron of folded regular heptagons
• Oct 15 2019: Added a new polyhedron of folded regular heptagons
• Oct 14 2019: Added a new polyhedron of folded regular heptagons and another one
• Oct 13 2019: Added a new polyhedron of folded regular heptagons and another one
• Oct 12 2019: Added a new polyhedron of folded regular heptagons
• Oct 11 2019: Started a page about polyhedra of folded regular heptagons
• Oct 7 2019: Add new model: a compound of 10 cubes
• Sep 11 2019: Update off-file service. It is possible now to set the camera distance and to specify a link to an off-file in the local domain. Also add some explaining text.
• Mar 31 2019: Add new model: a compound of 10 cubes
• Feb 20 2019: Add interactive JavaScript models with compounds of cuboctahedra: Interactive Compounds of Cuboctahedra
• Feb 10 2019: Add interactive JavaScript models with compounds of octahedra: Interactive Compounds of Octahedra
• Feb 03 2019: Add new polyhedron: Compound of Four Octahedra
• Jan 26 2019: Add new polyhedron: Compound of Eight Octahedra
• Jan 20 2019: Show cube compunds with Javascript and remove X3D support Interactive cube compounds
• Dec 12 2018: Add a new polyhedron: Compound of Two Great Icosahedra
• Dec 12 2018: Moved uniform compounds in separate page Uniform Compounds
• Nov 27 2018: Added a page aboud Compound of Six Tetrahedra (incl. 3D model)
• June 12 2018: Added a WebGL 3D model to Compound of 12 Cubes. Added a WebGL 3D model to A Compound of 13 Cubes.
• May 31 2018: Added a WebGL 3D model to A Compound of 30 Cubes.
• May 30 2018: Updated model on gidrissid. Added a WebGL 3D model to Skilling's Compound of Six Cubes. Added a WebGL 3D model to Compound of Twelve Cubes.
• May 24 2018: Added a page aboud gidrissid (incl. 3D model)
• May 21 2018: Added a WebGL 3D model to the this cube compound page and updated it to HTML 5.
• May 19 2018: Added a WebGL 3D model to this and this cube compound pages and updated them to HTML 5.
• Thu May 17 2018: Better lighting and perspective for 3D scenes in: this cube compound page and this cube compound page
• Mon May 14 2018: Added a WebGL 3D model to this cube compound page and updated to HTML 5.
• Mon May 07 2018: Added a service to show local OFF files in 3D:
• Sun May 06 2018: Added a WebGL 3D model to this cube compound page and updated to HTML 5.
• Wed May 30 2012: Updated the text of this home page and of Compound of Four Rhombic Dodecahedra to Stellations of a Trapezoidal Icositetrahedron.
• Wed Sep 05 2010: Added a new model to regular heptagons.
• Wed Aug 25 2010: Added a new model to regular heptagons.
• Thu Aug 19 2010: Added a page with one model with regular heptagons.
• Thu Aug 30 2009: Small changes in: polychoron models
• Thu Aug 27 2009: Added an embedded video of the rectified 24 cell on polychoron models
• Sun Aug 16 2009: Updated current stage of the rectified 24 cell on polychoron models
• Tue Jul 07 2009: Updated current stage of the rectified 24 cell on polychoron models
• Sun Jul 05 2009: Updated current stage of the rectified 24 cell on polychoron models
• Tue Jun 22 2009: Added current stage of the rectified 24 cell on polychoron models and added a page with tips for constructing projections of polychora with transparent material
• Tue May 05 2009: Embedded YouTube videos in Polyhedra with Heptagons and added a new page with polychoron models.
• Tue Apr 28 2009: Added a new cube compound and minor updates in this cube compound page
• Mon Mar 09 2009: Added a model to Polyhedra with Heptagons and merged the uniform models into one page and added one model: Uniform Polyhedra
• Mon Oct 06 2008: Added some links
• Mon Mar 03 2008: Added a few models to a page about uniform compounds of uniform polyhedra (under construction).
• Sun Mar 02 2008: Added a few models to a page about uniform compounds of uniform polyhedra (under construction).
• Sat Mar 01 2008: Added a few models to a page about uniform compounds of uniform polyhedra (under construction).
• Fri Feb 29 2008: Fixed a typo on a page about Cube compounds.
• Mon Mar 12 2007: Updated a page about Compounds of Tetrahedra. Added domain angles for compounds with rotational freedom that have cyclic and dihedral symmetry.
• Thu Mar 01 2007: Updated a page about Compounds of Tetrahedra. Added domain angles for compounds with rotational freedom that have tetrahedral, octahedral or icosahedral symmetry.
• Wed Feb 28 2007: Updated a page about Compounds of Tetrahedra. Added rigid compounds (without their rotational roots).
• Tue Feb 27 2007: Updated a page about Compounds of Tetrahedra. Added compounds with rotational symmetry that have tetrahedral, octahedral or icosahedral symmetry.
• Mon Feb 26 2007: Started with a page about Compounds of Tetrahedra.
• Fri Feb 02 2007: Updated a page about Cube compounds, a page about compounds of Octahedra, a page about compounds of Cuboctahedra. Archive with 'off' files is available now.
• Sat Jan 13 2007: Updated Polyhedra with Heptagons.
• Fri Jan 12 2007: Added Polyhedra with Heptagons.
• Sun Mar 05 2006: Updated Stellations of a Trapezoidal Icositetrahedron.
• Sat Feb 18 2006: Updated Stellations of a Trapezoidal Icositetrahedron.
• Tue Jan 17 2006: Updated Stellations of a Trapezoidal Icositetrahedron.
• Sat Jan 07 2006: Added Stellation of a Trapezoidal Icositetrahedron.
• Thu Oct 13 2005: Added 3D models for The Stellations of the Rhombic Triacontahedron.
• Sat Sep 13 2005: Added picture of The Rigid Compound of 6 Cubes.
• Sat Sep 10 2005: Added 3D models for The Stellations of the Icosahedron.
• Mon Aug 15 2005: Some small text and structural updates
• Mon Aug 15 2005: Added support for X3D models in a page about Cube compounds.
• Sat Jul 16 2005: Finished new compound of 12 cubes.
• Sun Jul 3 2005: Added a page about compounds of Cuboctahedra.
• Thu May 5 2005: Started with a page about compounds of Octahedra.
• Mon Feb 28 2005: Started with a page about Cube compounds.
• Sun Dec 18 2004: Added new stage to new compound of 12 cubes.
• Sun Jul 26 2004: Added new stage to new compound of 12 cubes.
• Sun Jun 27 2004: Added new stage to new compound of 12 cubes.
• Tue Jun 22 2004: Updated the text in new compound of 12 cubes.
• Sun Jun 20 2004: Added new compound of 12 cubes.
• Tue Feb 3 2004: Added My favourite pictures.
• Tue Dec 17 2003: Added Picture inside the Quasitruncated Cuboctahedron and another one.
• Thu Dec 11 2003: Added Quasitruncated Cuboctahedron.
• Tue Sep 30 2003: Added templates for Quasitruncated cube.
• Thu Sep 18 2003: Added Quasitruncated cube.
• Thu Sep 11 2003: Added Home.
• Fri Sep 5 2003: Added A Misty Morning.
• Thu June 05 2003: Added Old Compound of 12 Cubes and Compound of 13 Cubes.
• Mon May 19 2003: Added Pictures of RommeleÅsen.
• Thu Mar 6 2003: Added Pictures of India.
• Thu Jan 30 2003: Added Pictures of Val Thorens.
• Tue Jan 28 2003: Added Pictures of Lund and Parties.
• Tue Jan 7 2003: Added Pictures of Helsinki.
• Fri Dec 13 2002: Added Pictures of my colleagues.
• Tue Oct 15 2002: Added the classic compound of 3 cubes.
• Thu Oct 10 2002: Added my latest polyhedron model: 12 Cubes Stuffed with Cube Symmetry.
• Wed Aug 13 2002: Updated the entrance.
• Wed Aug 12 2002: Added Bakos' compound to polyhedron models.
• Wed Aug 31 2001: Added pictures of Norway to the hiking section, a cube puzzle, and a puzzle of a rhombic triacontrahedron to the polyhedra section.
• Wed Aug 02 2001: Added a not yet edited story about holiday in Norway.
• Wed Jul 18 2001: First new setup, don't be upset.