Do you mean a window winder? Perhaps a photo may help source a "crank" handle? Best of luck, Dr Retro of Dr Retro House Calls

Usually the crank, winder, and chain for window winders are sold as a single item. I have never seen the crank handle sold separately as a component. You would be best to visit demolition and salvage yards to see if you can find matching hardware, such as Hughes, if you are in Melbourne. As it such a small component they are unlikely to list it separately on their website. https://www.renovatorsparadise.com.au/product/window-winders-classic/ However after 50 years of wear and tear, and exposure to the elements, I would be sourcing new window winders and replacing the whole assembly rather than trying to fix up old and worn. Best of luck, Dr Retro of Dr Retro House Calls

i have to say that paying cash for a job so that the worker can avoid including payment for their tax and GST is illegal and party to fraud ..the extra payment is not for your invoice it's a savings for you so that they don't have to include the payment or GST in their income for tax and i think that expecting a quality job for work for which you haven't received an invoice or receipt is unlikely and they've already produced bad workmanship twice... i wonder if they repaired the dampproofing and flashing around the window and if you will have a similar problem in future?..i would patch up the grout and clean off the tiles and keep an eye on the wall so that if/when the leak returns you're ready to employ a professional to do a quality job

Thank you everyone for your tips and ideas. Firstly, it is a bit confusing because the plan says 'study' (former residents used it as a study). Its intended purpose, and what we will use it for is a small dining room/breakfast nook. There is light from the study window, but most of it is obscured by trees. To pretty up the carport space I have planted some hardenbergias, but they are not doing great when a two-story house blocks the northerly sun. me me and fianou luca - I don't mind the idea of frosted louvres. It has come up in our discussions. I will have to research if it fits in with the aesthetic of our kitchen and mid-century windows in the lounge room. Kitchen and Home Sketch Designs - Unfortunately the door to the carport is unusable. It is over a metre drop from the kitchen to the outside ground and there is old plumbing around it. Bricking it up is non-negotiable. I like the idea of putting a window further down into the 'study', but only if we were to set the shed back further. It is food for thought in the future. Siriuskey - I think we are on the same page. I would love to set the garage back, however, that is way into the future. Thank you to everyone who suggested skylights. I would LOVE to add them. It might be worth getting a quote, but we need to draw a line in the sand for this renovation. After the kitchen is done, we need to redo our roof. Perhaps a good time for some VELUX! I am still really torn on what to do. I just blocked up the windows with some towels, and it is quite dark. It is hard to gauge because the walls are still up, thus obscuring light from the lounge and study. Will need to do more pondering.