Instructables

Step 5: Basin Construction - The Bottom

 The Basin is constructed from the the upper portion of a third bucket and a bucket lid.

Removing the Outer Rim of a lid creates the Trimmed Lid which will be the bottom of the Basin.

1. Remove the rubber seal from the underside of a bucket lid.

2. Cut along the bottom of the trench that the seal was in. (dotted path in Photo 2)
    Cut all the way around the lid to remove the Outer Rim. (Photo 2 & 3 shows where to cut)

3. After cutting off the Outer Rim, clean-up the outer diameter of the lid by trimming any excess material so that the outer diameter of the lid is flush with the Upstanding Rib Wall.

When complete the overall lid diameter should not extend beyond the Upstanding Rib Wall.

Note: In the completed basin photos in step 5, notice that the bottom of the basin is concave.  To achieve this "bowl shape",  the lid was heated in the oven at about 275 degrees F for about 15 minutes to soften the plastic.  While hot, it was worked over the bottom of a large glass mixing bowl to impart the concave shape.  The removal of the Outer Rim was done after this forming.

"Stretching" the lid to form this shape is not necessary, and was in fact, the most difficult part of the process.  (handling hot plastic while stretching and keeping it from buckeling and over-thinning is not so easy).  Well worth the effort thought...It gives it a true sink look and better funnels the water to the center drain...much better than a flat lid basin bottom.

 
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