just started my first DIY project of finishing my 3 year old IKEA Gerton Beech Wooden table top. I have been using this as my computer table and it has become very dirty so I thought I'll use this opportunity to also try to make it look like a beautiful professional table top (loved this one: https://imgur.com/gallery/kEmy8).
So I read up A LOT about how to go about this and finally decided on a wipe on poly finish and went out and bought all the stuff that I needed.
All my excitement turned to nought when I began sanding the tabletop (with 100 grit sandpaper). I couldn't get more than a few swipes before the paper gets clogged with a gooey greyish black residue that also gets even more tightly lodged into the tabletop with the sandpaper movement over it. I tried a bit and decided to check with the hardware store if they had any advise for this. The guy there told me to use an even coarser sandpaper and recommended 60 which I did but with the same results.
I've now spent a couple of hours trying to sand the table but have given up for the day. I also tried wiping it down with white spirit (bought to clean my brush for the stain apply) but again faced the same issue when I tried to sand the table. I'm also wondering if it's worthwhile buying an orbital sander to make this task easier but not sure it will with the specific issue.
I don't want to give up on this though and would really appreciate any advise to solve this problem. The table was treated with a coat of some sort of oil (most probably Danish oil) when it was bought new about 3 years ago so not sure if that's what's causing this problem now.