Kune Kunes by vet @ 6 weeks and all 'big' pigs @ 3 days old by ourselves
I guess mine are "big" (yorkshire (large white)). Who taught you to castrate at 3 days?
It was the wonderful Lillian who taught me (as well as sausage making, curing and the art of dispatching & preparing turkeys
) but OH had done in years ago in a commercial setting, so once he'd had a quick 'refresher' he was much more confident than me (and usually does the cutting while I do the holding.)
I think a friendly farm vet would be quite happy to show you how to do it, or you could take them to the vet surgery and have it done there on the day for not much cost.
When we're removing piglets from mum (for jags, castrations, tagging etc) we tend to take all the boars out and leave the gilts or take the gilts and then the boars - this way mum always has some piglets around her and it stops her getting too stressed. Timing it to co-incide with feeding is my 'tip', mum is less bothered by
everything when her nose is in a trough
Castration is done at the opposite end of the shed (all the boys go back in together), but jagging, tagging etc is done 'penside' and each piglet returned as soon as whatever we're doing has been done.
HTH
Karen