How to Make a Plant Pot Using Plaster

You will need 2 sheets of polypropolene that is around 210 by 297 millimeteres, a cutter, a cutting mat, a marker, a ruler, lots of tape, a yogurt cup, a bucket, plaster powder, water, sand paper, sand board, drill, and a drill head.

Once you have taped your sheet of polypropolene on to the cutting mat, draw on the edge of the polypropolene using your marker, and create a square using a ruler that is 3 centimetres in length and width. Once you have finished drawing out the square cut it out using a cutter and a ruler.

Drawing on the edge of the polypropylene once again, mark out a 3 centimeter line. This will be the base of the trapezoid. Using a protractor, mark out a 110 degree tilt which should originate from the right side of the line that was just drawn. This tilt should lean to the right side of the line. Now on the left side of the line, mark out a 110 degree tilt again which should originate from the left side of the line. This time, the tilt should lean to the left side. Now, align your ruler with the mark that you have just created using the protractor with the right side of the line then draw out a 9 centimeter line. Repeat this step but for the left side of the line. Once the 2 lines have been drawn out, the two lines should form a funnel shape. Then draw a line from the top of each line to the other which will close the shape off. Using a cutter and a ruler, cut out the shape by following the lines that have just been created.

Once the trapeziod has been cut out, put it on top of the sheet of polypropylene. Using a cutter, cut out a replica following the edges of the trapeziod making sure that the blade is touching the trapeziod at all times. Repeat this step two more times to have a total of 4 trapeziods.

You should now have a total of five pieces. Now tape these pieces together by taping the smaller end of the trapeziods to the square. Then, try and fold up the trapeziods and tape each side together until the shape is able to hold. If there are any gaps in between the pieces make sure to cover them with tape our else the polypropylene will be able to leak through the mold. When doing this, tape the inside of the trapeziod instead of the outside our else the tape will create a print inside the body once the pot is molded.

These steps will be very similar to the previous steps because it is the same shape but bigger. Take your second sheet of polypropylene and tape it to the cutting mat. First, draw on the edge of the polypropolene using your marker, and create a square using a ruler that is 5 centimetres in length and width. Once you have finished drawing out the square cut it out using a cutter and a ruler.

Drawing on the edge of the polypropylene once again, mark out a 5 centimeter line. This will be the base of the trapezoid. Using a protractor, mark out a 110 degree tilt which should originate from the right side of the line that was just drawn. This tilt should lean to the right side of the line. Now on the left side of the line, mark out a 110 degree tilt again which should originate from the left side of the line. This time, the tilt should lean to the left side. Now, align your ruler with the mark that you have just created using the protractor with the right side of the line then draw out a 12 centimeter line. Repeat this step but for the left side of the line. Once the 2 lines have been drawn out, the two lines should form a funnel shape. Then draw a line from the top of each line to the other which will close the shape off. Using a cutter and a ruler, cut out the shape by following the lines that have just been created.

Once the trapeziod has been cut out, put it on top of the sheet of polypropylene. Using a cutter, cut out a replica following the edges of the trapeziod making sure that the blade is touching the trapeziod at all times. Repeat this step two more times so that you should have a total of four trapeziods.

You should now have a total of five pieces. Now tape these pieces together by taping the smaller end of the trapeziods to the square. Then, try and fold up the trapeziods and tape each side together until the shape is able to hold. If there are any gaps in between the pieces make sure to cover them with tape our else the polypropylene will be able to leak through the mold. This time when taping it together, you must tape the outside of the mold because if you tape it on the inside, there will be a print that is made on the outside of the plant pot.

First of all, get your bucket and inside the bucket, put 3 yougurt cups of plaster and 2 yogurt cups of water. Mix it together with a plastic spatula until they combine well enough and the texture of the mixture is smooth. Once the mixture is completely smoothed out, the plaster will harden out very fast because is you are not

Once your plaster and water mixture is prepared, go ahead and pour the mixture into the mold leaving 2 centimeters of the mold not filled. Next, put your core into the mold. Try and have the core and mold remain the same height so that the surface is even. If it keeps trying to bounce back up, put some tape over the whole surface which will prevent the mold from bouncing up and it keeps both of those shapes even. Once this is complete, leave your creation to dry.

After about an hour or less, use a cutter to slice in between each of the pieces of the mold, seperate the pot and the mold by pulling the pieces away with your fingers, and slowly bring the pot out of the mold. Bring your pot with the core still inside the pot to a cleaner table. If the plaster has leaked into the pot, carve away the plastic that did and then pry out the core. If not, you can just pull out the core easily.

If the surface is not even, use a sand board and rub the surface on the board back and forth until the surface is even. If there or other minor imerfections or if there are prints within the pot caused by the core such as a tape prints, use sand paper and a cork block because it is more versatile in can get into places that the sand board cannot.

Finally, drill the bottom of the plant pot so that a bit of water is able to escape from when the plants are being watered.