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How to Fix Plastic Chair Cracks

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This guide will show you how to repair a crack in a generic plastic chair. The cracks this guide specifically addresses include partial cracks on the chair body/legs and full cracks on the chair spindle.

This guide focuses on how to repair a crack on the chair spindle. It involves making a new seal for the crack using super glue and baking soda and sanding it down to bring the broken area back to its original look.

Warning: Work in an area with good ventilation. Isopropyl alcohol is flammable. Additionally, wear protective clothing to avoid getting super glue on your clothes or skin.

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  1. How to Fix Plastic Chair Cracks, How to Fix Plastic Chair Cracks: crwdns2935265:01crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 How to Fix Plastic Chair Cracks, How to Fix Plastic Chair Cracks: crwdns2935265:01crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Lay the broken chair such that the crack is parallel to the floor.

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  2. How to Fix Plastic Chair Cracks: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 How to Fix Plastic Chair Cracks: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Wear gloves to minimize chemical contact on skin.

    • Dampen a rag with isopropyl alcohol.

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    • Clean the surface of the crack with the dampened rag to remove all dust and debris.

    • Repeat on all sides of the crack (edges and backside).

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    • Apply glue between the crack.

    • Then apply glue across the surface of the crack.

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    • Hold the two glued pieces together for 30 seconds to allow the glue to bind to the chair.

    • Do not let the glue dry completely. The wet glue will need to bind with baking soda in the next step.

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    • Pour baking soda over the crack until the glue is completely covered under a layer of baking soda.

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    • Use your finger to distribute the baking soda in order to cover all parts of the crack.

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    • Allow the baking soda to seal onto the super glue over the crack and wait for the mixture to dry.

    • After ten minutes, brush away some of the un-glued baking soda to check if the glue is solid.

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    • Flip the chair over.

    • Repeat the procedure on the backside of the crack starting from step 4 and ending with step 8.

    • Avoid reapplying glue in between crack, since it has already been sealed.

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    • Remove excess baking soda from both the front and back side of the crack.

    • Use water or isopropyl alcohol to remove fine grains around the repair site.

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    • Sand off any excess layers of glue on both the front and backside of the chair using coarse sandpaper.

    • This step is optional and simply helps to return the chair to its original look.

    • It may take a while to rid the chair of all texture.

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    • The crack has been repaired!

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Sumeet Dhillon

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UC Davis, Team S2-G7, Andersen Winter 2020 crwdns2935289:0UC Davis, Team S2-G7, Andersen Winter 2020crwdne2935289:0

UCD-ANDERSEN-W20S2G7

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Do you push the baking soda down into the glue (or into the crack), or just spread evenly on the surface?

Dr John Christensen - crwdns2934203:0crwdne2934203:0

Lem apa yang digunakan (nama lem)

Iwan Toro - crwdns2934203:0crwdne2934203:0

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