Cylindrical square from a lathe tailstock.

[DIYSwede]

So is Sweden like Spain in which the main day is tomorrow, the 6th? Things do not get back to normal until Tuesday at the earliest.

If you had to pay someone to grind a used gudgeon pin to true it maybe it would make more sense to go and buy a new one.

Yup - quite a few enterprises of interest closed on Dec 23rd, and opens Tuesday at the earliest.
Personally, I'll start working next Monday, and having had my hands full of hungry, ungrateful heirs up 'til now,
I hope to get a few days of shopwork done from Tuesday when my love takes off for a week in Hong Kong.

Thanks for the tip, but being Über-cheap, I can easily get 20 dollars worth of odd tools and spend a day's DIY work to save 5 bucks!
My real rush kicks in when taking some odd, cheap or free piece totally outta its intended use for my perverted desires, as this
iSore™ Tool Series

Microscope stand from an orange press, (2 buck flea market find) a PC plastic offcut and a HD disk.

My smugness triumphs when walking in a hardware store checking all the new, branded tools "suffering from Design".
Buying ready-mades is merely for "amateur hobbyists", not us die-hard compulsory DIY machinists!