I'm replacing my basement sink with a lightweight plastic sink (the old one was one of those heavy concrete sinks) and I'm wondering how to attach it to the ceramic tiled floor (over concrete).

Drill and Tapcon? Drill and Hilti? Liquid Nails? Duct tape?

Any ideas?

(I'd prefer a method that would allow me to UN-attach it if I ever needed to... )

If sink has backsplash, attach to wall with screws. If sink is remove wall will be easy to repair.

Any holes in tile would call for replacement of tile if sink is removed.

I have sink in for about 6 yrs and not attached to floor.

Chuck

Like Chuck said, try attaching to the wall.

If you can't attach to the wall try liquid nails. Although nothing is going to adhere to the tile floor very well, it might give you the stability you want.

I'm putting up two laundry sinks, (see images) I assume, from your question, that you have the one with legs.

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I'm wondering how to attach it to the ceramic tiled floor (over concrete).

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Follow the above and attach the backsplash to the wall. Your legs should have mounting holes in the feet. You can Tapcon the feet to the tile or use plastic inserts and wood screws to secure the legs to the tile. If you ever want to remove the sink you can simply grout the holes with tile grout and hide them. However, Your wall stubout will be a lot harder to hide. Good ;luck, Tom

Yes, just like the left picture. No backsplash to speak of.

I don't mind tile holes in the far, far future.

But, are there any anchors I can sink to screw into, so if I want to change the sink one day, I have the anchors there to screw into?

(By the way, carbide or masonary tipped bits? There's tile then concrete)

Drill pilot holes through tile with spear pointed glass drill bits. They don't last long but they are cheap. Then drill concrete with masonry bits, preferably hammer drill and percussion bits. Use plastic or lead anchors. Stainless screws would be best.