How can I remove imperfections from new cast tabletop??

Personally if it’s flat and smooth and has a coat of wax on it you’re ready to go.

-- I would drink a river of the kool aid before I took the smallest sip of the tea...

I think any use of an abrasive would potentailly ruin the flatness of the table. As DKV stated, Wax on, good to go!

-- Randy-- I may not be good...but I am slow!

Kerosene is the only thing to remove the oil.

-- I'm him

I used WD 40. Worked pretty good.

Mine had the same look to it. I wiped it hard for a few minutes with a solvent and then covered with paste wax to protect.

Did you decide on a blade from the other post?
http://lumberjocks.com/topics/44741

Keep us posted.

-- Randy -- Austin, TX by way of Northwest (Woodville), OH

Thanks everybody for the tips. I got it all wiped down with some WD-40 and then followed with couple of coats of Johnson’s Paste Wax. It doesn’t feel as smooth to the touch as the Delta tools that I’m used to working with at work, but a tossed an old T-shirt on it and it slid clean off and onto the floor, so I guess it’s plenty of smooth. My hands to feel a bit tacky right now, so it might just be me.
Now it’s time to true it all up!!

@Randy, I haven’t decided on a blade yet. I’m probably going to go with a Freud, as that is one of the brands I sell at my store and I can pick one up for about 28% regular price when it’s on sale with my discount; I just have to decide which one(s).

-- -TD

if this really is from the protective grease than WD-40 and some paper towels should take it off, if that doesn’t do the trick, than you have discoloration from surface rust, or similar which won’t come off easily/ you can try rubbing it with wd-40 and green scotchbrite pads, but it will most likely leave a faint shadow of the marking and add some scratch marks to the cast iron (not that it would affect it’s functionality or anything).

-- ㊍ When in doubt - There is no doubt - Go the safer route.

Some automotive rubbing compound should do it. I use and old Random orbital sander with a green scotch brite after putting a l small amount super fine rubbing compound on the table surface and then act like you sanding and it will buff out the marks. After that wipe of the excess and the use the a soft rag and the ROS to buff it out and after the tops clean and shinny you can use the ROS again and another soft rag to buff in some wax. This works to take rust off too.

-- W James Brokenbourgh Custom furniture maker http://artisticwoodstudio.com/

I routinely sand the crap out of my TS top to get glue, sweat rust, and finish off of it. It’s flat and will remain flat for a long time.

Just get to work with that table saw and don’t worry about the blemish! But congrats on the saw!

-- jay, www.allaboutastro.com