All parts are designed with a chamfer the bottom edge to help bed removal. I would recommend using dental floss to remove the Table Top part, as it may warp when removing it if you use too much force. The chamfered edge is the only short cut edge on the part. All other parts are labeled top or bottom where the chamfers are to help removal. Print with no supports and infill can be 20% but the snap fit can tend to be a little weak at that low of infill. PLA is fine for this application. The mounting holes on the bearing are made for 1/4-20 bolts to pass through. If you have a CNC router, you can also cut the top to be bolted to this bearing bottom.