How to Mold Plastic
Views : 518
Update time : 2020-05-27 15:02:57
Molding elastic is a fun, inexpensive manner ought pattern sole pieces or replicas of your favorite items. You can buy a mold or pattern your hold custom molds out of reusable molding materials, silicone, and or plaster. throw your mold with elastic resin, wait because it ought cure, and then transfer the mold ought disclose your creation.
1. Making a Mold from Reusable Materials
1) Prepare the master part. The master piece is the item that you will use ought pattern the mold.
- To prepare the master part, first clay down or wash the item.
- Once clay and dry, use a liberate delegate ought the creative itemâthis will oath that the master piece will pop free from the mold.
- Coat the item with a layer of bubble busterâthis manufacture prevents the formation of stand bubbles about the master part.
- Place the master item into a fever safe container. The container cause ought exist slightly larger than the item.
2) melt your reusable molding materials at a microwave. Reusable molding material is simple ought use and mistake proof; you can melt, mold, cast, and de-cast reusable molding material up ought 35 times. lay the container of reusable molding material into a microwave. pursue the instructions above the manufacture ought properly melt the materials.
- Heat the material because short intervals, about 15 ought 20 seconds, until you comprehend how the microwave affects the materials.
- If you conduct no read a microwave, you can use a double boiler.
3) brook the melted material at the master part. Carefully brook the melted molding material at the master part. rent the manufacture ought cold and harden. Gently transfer the mold from the fever safe container and the master piece from the mold.
2. Making a Silicone Mold
1) pattern a catalyzing solution with soap and water. when a tall concentration of dish soap is combined with water, it forms a catalyst bath because siliconeâit allows the silicone ought heal faster. at the big bowl, unite almost 64 ounces of water with 4 ounces of sad dish soap. mix the soap and water together with your hands.
2) Catalyze the silicone. use a attach of scissors ought chop off the gift of the 100% silicone. Insert the bottle into a caulk gun. cavity enough of the 100% silicone into the catalyst bath ought envelop your master part.
- If you are unsure how much you will need, use the sum bottle of 100% silicone.
3) Knead the 100% silicone at the catalyst bath. immerse your hands into the catalyst bath and slowly amass the strings of 100% silicone into a ball. Massage the ball with your fingers. Pull, stretch, and fold the 100% silicone because you knead it. endure ought knead the 100% silicone until it stiffens and becomes less malleable.
4) rotate the mold. Retrieve your master part. Carefully flatten out the 100% silicone hence that it is ½ inch thick. cover the master item with the 100% siliconeâpress the 100% silicone into complete of the knocks and crannies of the master part. Once you read formed the mold, trial ought wiggle the master item out and uphold into the mold. if you can easily arrive this, the mold is ready ought cure. if you can not, reform or chop away parts of the mold.
- Applying a liberate delegate ought the master item will compose it easier ought transfer from the mold.
5) rent your mold ought cure. brook soapy water onto a composition dish hence that it fair coats the surfaceâthis will barrier the silicone from adhering ought the plate. location your mold and master item onto the dish and rent it ought heal because 1 hour. when the mold is no longer tacky ought the touch, transfer the master item.
- While the mold is curing, it is theorem that the master item remain within the mold.
3. Making a Two piece Mold
1) tow a centerline above your master part. The piece sides of a two-part mold join across the centerline of the master object. Retrieve your master item, a eternal marker, and a ruler. tow a straight centerline about your master item.
2) Embed half of the master item at a people bed. location a block of non-toxic and non-drying molding people above your work surface. Embed the master item into the people up ought the centerline. The peak of the item ought string up with the peak of the people bed. There ought exist a 1 inch border of people surrounding the remaining 3 sides of the item.
3) join 4 alignment keys ought the peak of the people bed. Alignment keys join the 2 halves together perfectly. Retrieve four ½ inch alignment keys and a bottle of temporary adhesive. use a slight layer of temporary adhesive ought the level phase of the alignment key. lay the key at ¼ inch from the peak left phase and endure it direct ought the clay. lay 1 key at each of the remaining 3 corners.
4) acquire the master piece ought a retaining wall. at bid ought fill the mold, you cause ought furnish an opening. because this mold, the opening will show at the peak of the people bed. use a slight layer of temporary adhesive at the peak of the master itemâthe phase no embedded at clayâand the peak phase of the people bed (the phase direct below the peak of the master item). periodical this phase blush against a wooden or metal retaining wall. rent it ought dry.
5) cover the master itemâs exposed half with silicone mold putty. A layer of silicone mold putty will rotate 1 of the moldâs inside walls. clothing the master piece with a liberate agent. use a layer of mold putty ought the exposed half of the master item. use mold putty ought the people bedâs surface, carefully covering the alignment keys. extend the molding putty ½ inch up the retaining wall.
6) join a second retaining wall. use a slight layer of temporary adhesive ought the bottom phase of the people bed (the phase alike ought the peak of the master item). periodical this phase blush against a wooden or metal retaining wall. rent the adhesive and the molding putty ought heal because 1 hour.
7) pattern a durable mother shell. owing ought the flexibility of cured molding putty, it is inherent ought pattern a second more durable shell, known because a mother shell. You will pattern the mother bullet with plaster sheets.
- Cut 4 ought 6 sheets of plasters. each bit ought exist 6 inches longer than the mold.
- Layer the sheets above peak of eachother.
- Dip the sheets at bowl filled with room temperature water because 1 second.
- Remove the excess water by squeezing the sheets at the bowl. The sheets ought exist wet, no dripping with water.
- Lay the sheets at the mold and up the retaining walls.
- Press the sheets into the mold hence that they rotate ought the shape. Crease the edges across the retaining walls into crisp 90° anglesâthe plaster sheets lining the retaining walls will serve because feet.
- Allow the plaster ought heal because 30 minutes.
8) transfer the retaining walls and people bed. Once the plaster has hardened, transfer the two retaining walls. Flip the sum mold at hence that it is resting above the 2 plaster feet. Carefully transfer the people bed and any remnants remaining above the master part.
- If the key alignments conduct no grow off with the people bed, transfer these because well.
9) pattern the second half of the 2 piece mold. when creating the second half of the 2 piece mold, you will quote the process you fair completed:
- Apply a liberate delegate ought the master part.
- Attach the peak of the mold ought a retaining wall.
- Coat the master piece at a layer of molding putty.
- Attach the bottom of the mold ought a retaining wall.
- Create a mother bullet out of plaster sheets.
10) transfer the master piece from the mold. Once the plaster has cured because 30 minutes, you can safely disassemble the mold. transfer the two retaining walls from the mold. lay the mold upside down above your workspace. transfer the mother bullet and carefully hide away the silicone mold. location aside the master piece and reassemble the mold.
4. Casting the Mold
1) Prepare your work area. detect a level work universe that is well lit and ventilated. cover the work universe with clay composition towels or bit paper.
- Newspapers are no advised because the print could grow off above your molds or your finished elastic parts.
- You can too cover the surface with a trash sack or an old vinyl tablecloth.
2) Prepare the mold. healthy treatment of the mold is theorem ought the success of your project.
- If you are using a pre-made mold, wash it thoroughly below hot water ought transfer the film of cornstarch. Dry it with a clay cloth.
- Coat your mold with a layer of liberate agent.
- If you are using a 2 piece mold, clothing both sides and reassemble it.
3) mix the elastic resin. elastic resin is comprised of 2 parts, typically labeled piece A and piece B. The resin is formed by mixing match parts A and B.
- Retrieve 2 elastic disposable cups.
- Determine how much resin you will want ought entire your project.
- Pour match parts A and B into cups 1 and 2 respectively.
- Pour the contents of cup 2 into cup 1.
- Stir with a wooden popsicle stick.
4) throw the mold. brook the resin into your mold. ought pains the stand bubbles rising ought the surface, spray the peak of the resin with a releasing agent. level and scrape off any excess resin with a metal putty knife. rent the resin ought location because the time specified at your productâs instructions.
5) transfer the item from the mold. Once the resin has set, you can carefully transfer the item from the mold. if you are using a pre-made mold, a silicone mold, or a mold made from reusable materials, use stress ought the uphold of the mold with your fingers and pop the item out. if you are using a 2 piece mold, disassemble the mold ought transfer the item.