SIO Sioliet – Speelgoed Industrie Overijssel


“The wooden building”

Sioliet, a wooden construction toy created by a Dutch company SIO. SIO stands for: “Speelgoed industrie Overijssel”. I’m still very curious when these buildings were produced and how they are linked to SIO.

The SIO company started in 1938 and went bankrupt in 1982 after a big fire.

More information about SIO:

  • SIO, after Rokus van Blokland & Corry van Blokland Mobach joined in 1950.
  • SIO, in relation to a cooperation with Albouw from Baarn.

Box (1) – Sioliet Chalets (1960-1965??)

No further information.


Box (2), manual, content & building

On the back of the box, there is a sticker with the product number (something like: “?32”) and a number “9,50”, most likely the price of the product in Guilders.


Box (3), manual & content

Found also a 3th Sioliet box, now I’m even more curious, what is the story behind these buildings. It’s definitely using the same doors & windows, like box 2. If someone knows more details about Sioliet, please let me know!


Box (4) & content

Building block box, also using similar doors, now w/o grooves in the frames.


Parts (box 2)

An other wooden log system, with it’s own unique features:

  • This system has also 2 half logs, so the house stays flat at ground level from both sides.
  • The doors & windows could be created from individual parts, although it’s better to leave the windows intact:
  • The roof system is also a bit different. Two roof panels could be anchored on wooden pins in both gables. In between, roof parts are interlocked by a simple groove system. The bottom part ends straight and the top part tapered.

Still missing some parts for finalizing this building: medium half log, 2 big door sills and the chimney…


Some system characteristics

Here a short list of some system characeristisc and how it’s retrofitted into the virtual LeoCAD library:

Part types:Original:Virtual:
Wooden pieces… wood
~12×17
Single color pieces
Pitch of systemXY: 112 & 212
Z: ~8.5 [mm]
Snap settingsn/aXY: 1 [mm]
Z: 1 [mm]
Angles: 5 [deg]
Angled parts35 [deg]35 [deg]

Funny fact, you would expect a constant height build up, based on interlocking cut-outs, but here the wooden logs are higher then twice the cut out, so building feels a little loosely.


Library information (box 2)

Here an overview of the parts library:

Part groups:Colors:Unique shapes:
Logs18
Sills, jambs, doors & windows27
Roof elements5
Total parts:20

Building in LeoCAD

It’s a fun & easy house to build, with those ‘thicker’ logs. From tolerances perspective, it doesn’t fit perfectly, but the virtual version does.