The 8 Best hardening Plastic putties (2023 reviews)

Are you planning to buy hardening plastic puttys, and are you confused about the options ? Your search ends here.

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Our Top Picks:

Best Overall: Buy: System Three hardening Plastic Putty READ REVIEW

Best For Concrete: Buy: JB Weld hardening Plastic Putty READ REVIEW

Best For moulding: Buy: JB Weld Epoxy Putty READ REVIEW

Best For covering metal screw heads: Buy: XUDOAI hardening Plastic Putty READ REVIEW

Best For Hard Plastic: Buy: Tiepetly hardening Plastic Putty READ REVIEW

Best JB Weld type: Buy: Hy-Poxy hardening Plastic Putty READ REVIEW

Best For small Or emergency repairs: Buy: Loctite hardening Plastic Putty READ REVIEW

Best Premium: Buy: Super Glue hardening Plastic Putty READ REVIEW

Best Overall: System Three hardening Plastic Putty

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If you want nothing short of the optimal putty for your regular usage, this system three hardening plastic putty is certainly a wise investment. It is a wood preservative treatment to kill active rot fungus and is extremely safe and easy to use. Feel exactly like the Model Magic clay, it is very easy to handle and sculpture the missing sections of the wood. It is an ultra-low viscosity epoxy resin system used to restore the strength of rot-damaged wood. It is moldable, cartable, lightweight, strong, and exhibits excellent adhesion to a variety of substrates. It is easy to mix, apply, sand and paint. It comes in 1-quart size additionally can be easily shaped and tooled. It is a great alternative for complex missing pieces of furniture and it paints well.

• Paints splendidly and really finishes up your work to perfection
• Great product to restore rotted wood back to it's original shape
• Love the ease of application, ease of sanding and the final results
• Really easy to use, easier than bondy, sticks well and sands nicelty

Best For Concrete: JB Weld hardening Plastic Putty

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The jb weld hardening plastic putty is the best reliable putty on the market today. This stuff is excellent, sets up and works quickly. It sticks to metal, plastics, and all kinds of materials. It is feaible to hold parts together until glue sets. It is perfect for hardy fixes. It's shape-able when cured, so you can handily disguise the fact that there is a repair made.

It is a trusty glue with many uses. It is still liquid enough to flow to fill the voids.

• Works very fast and is and is strong
• Bonds quickly and tight, easy to mix
• Great stuff, easy to work with, sets up in 5 min

Best For moulding: JB Weld Epoxy Putty

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Not everyone likes to purchase putty for their daily purpose, but the jb weld epoxy putty would be an anomoly. It is a hand mixable two part epoxy putty stick that is formulated to repair and rebuild various plastic compounds and surfaces. It is used to glue a plastic wing back on to a quadcopter. It is a bit like applying play-dough that gets super hard after a few minutes and sticks incredibly well to plastic and other materials. It can be sawed, drilled, carved, sanded and painted.

It is working on a motorcycle dash cluster. The clear is truly clear and not yellow. It is way better than standard bottom-shelf bargain bin super glue and is actually intended for mending plastics.

• Very stick on your hands if you don't wear gloves
• Great for some stability and body work
• Epoxy is the best solution for strong bonding

Best For covering metal screw heads: XUDOAI hardening Plastic Putty

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Xudoai has been making great putty for years, thanks to a combination of clever design and appropriate materials. It fills cracks and holes. It is suitable for a variety of materials, including metal, wood, glass, ceramic, fiberglass, stone, marble and many hard plastics, temperature. It does have an odd odor that lingers on your fingers even after washing your hands. The product is an insulator and can be applied to metals and the like.

The epoxy putty is evenly rubbed, and it will slightly heat up. They are wrapped in plastic and you just mix it like putty, dried fast, and holds well. It will harden to a metal/stone patch. It is great for the heat, definitely recommend.

• Curing time, the hardness increases rapidly
• Working very well, covered a growing rust hole in a bbq grill
• Ceramic, metal, porcelain can be repaired

Best For Hard Plastic: Tiepetly hardening Plastic Putty

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We know from years of feedback from readers, customers and amazon sellers, what most people want in a convenient and appropriate putty. The tiepetly hardening plastic putty is exactly that - it's a simple putty that hits all the right notes. This exhaust repair kit offers more possibilities for functional repairs you can think of. It is made of metal, wood, glass, ceramic, stone, and plastic after kneading evenly. It hardens to a strong plastic in the repair of broken car light bulb socket. It can be cured underwater and can also withstand continuous temperatures from day to day.

The plastic putty solidifies and becomes hard, which can be processed, painted, knocked, and drilled. It works well as intended and it is good for rough patches. It is perfect for fixing metal, hard plastic, stone etc. The plastic filler putty does not contain any irritating substances or odors, safe for the elderly and children.

• Works good, sticks well and easy to clean up
• Mixes easily and has plenty of working time
• Great product for attaching anything anywhere

Best JB Weld type: Hy-Poxy hardening Plastic Putty

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The hy-poxy hardening plastic putty is satisfactory and appropriate and fits well with your daily usage. It is an epoxy putty, so it tends to be thick and stiff. It is used for fast, inexpensive, but accurate drill jigs and placement fixtures. It is an epoxy-based product that is extruded in a cylindrical form to include the hardener and resin for easy and assured no waste mixing. It sets up fast and is easily sanded. It has a rather dull medium grey finish when cured.

The Alumfast stick adheres to most surfaces and can be machined and used under water as well. The color more closely matches that of an aluminum pipe. It can be sanded to blend in with the original material to the point where you can not feel the difference between the original and the epoxy.

• Easy enough to use, not like squishing a tube, but quick and workable
• Sanded and polished with dremel tool, spray can painted
• Easy to knead, easty to clean, moulds and sets very well and strong

Best For small Or emergency repairs: Loctite hardening Plastic Putty

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The loctite hardening plastic putty should be able to handle its purpose and duties with ease. This one is very easy to knead with your fingers unlike oatey and some of the others. It is a great invention and reasonably priced. It is ideal for 3-d repairs and projects. It can bond to damp surfaces, cure under water and can be sanded, drilled and painted after 60 minutes.

The Loctite repair putty all purpose formula will rebuild and bind to create a waterproof seal that is potable water safe. It allows it to be shaped and formed as desired before curing begins. It sands extremely easily. It is conists of an epoxy resin putty and hardener putty to produce a hard, tough, permanent, and waterproof bond on a wide range of materials. It drys in about 15 minutes but for a good permanent hold you should let it dry for about an hour.

• Very durable and good for sculpting
• Approximate working time is 5 minutes
• One of the new comers and featured product

Best Premium: Super Glue hardening Plastic Putty

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Compared with other putty in this category, the super glue hardening plastic putty has a design with broader appeal. It is ideal to use underwater in swimming pools, fish tanks or for common plumbing repairs. The epoxy putty has cured and it can be drilled, filed, tapped, sanded and painted. The product hardens in 5 minutes and cures in.

• New and hot release
• Good investment for long term