As the nerd I am, of course, it had to be chrome-plated, dome-shaped, countersunk, slotted screws in the handrail attachment. No one sees this, but I know it. 🤓
Despite caution, I managed to (hand-)break 3 out of 12 of the 4x30 screws and realized the ones I had were probably too soft. Down to Specialbeslag to buy others. The handrail is moved 1 cm lengthwise. I will have to plug the old holes (no one sees them either). It worked better this time...for a while. Now 2 of the new ones went with a clear snap. Harder but more brittle material in them. It will have to be countersunk steel screws instead. Third time's the charm.
How the heck do I get these broken screws out of the wood? They probably won't go with an “ez-out”. Maybe a tube drill around the screw? Found a tip with a 5 mm tile drill to be tested. Then plug the holes again.
Anyone here have a more elegant and better solution?