Self-answer to let you all know how things went. Warm water was having some effect but it took forever. So Saturday morning I went to the DIY store and got myself a 5 liter jerrycan of white vinegar. ...

Undo the 2 screws at the top and then take of the top cover. You can now take the actual motor out of the casing. It just sits loose in there. Then you can undo the 2 screws in the bottom to free the ...

Are both of these fences made by Lego? This is another example. This fence piece came in logo and non-logo versions in the 1970's.

The batteries are in series. Which gives (in theory) 6x 1.5 = 9V. Actually it is a little less than 9V as batteries drop voltage a little when they are used. They can drop as low as 1.2 V when they ...

I've got some of the left-hand side version with the solid pins and no markings in red. They are most definitely original Lego as I never owned any non-Lego parts. I'm fairly certain they came with ...

Mmmh... If you base doesn't have to be all solid... Recess some piece in there in which you can insert the arm-side of a mini-fig hand. Grasp your swimmer by the toes on one of its feet, with that ...

Don't ever put power-banks in series or paralel !!! They are not plain batteries. Unless you are an electrical engineer that understands the exact circuitry inside the power-banks this is in general ...

The red cap is fairly unusual. The head with the freckles as well... Based on that I would say the Universal Building set 50-1 on BrickLink The rightmost wheels are in that set too. The other wheels ...

I found a 1x1 round plate with one end of a "string with end studs" stuck on top of it surprisingly difficult to get apart with my bare hands, without ripping the string off. If you have 2 ...

1x1 plates in transparent colors (mainly red and green) from the Lego space sets in the 80's/90's seem to use a plastic that is very brittle to start with and doesn't age well. Just pushing one of ...