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The world of plastic welders can be fairly complex, and, with a huge range of makes and models on the market, it’s a bit confusing to know where to start if you want to purchase one.
You’ve established that you need to weld plastic, so that’s a start!
As far as the next step of choosing which plastic welding kit to buy; well, that’s our domain. Don’t worry, we’ve got it covered. We’ve put together the seven best plastic welder options out there, so you don’t have to painstakingly trawl through all the specifications and details yourself.
Simply read on and see what we found for you!
In a Rush? Here is Our Top Choice
Steinel Heat Gun Kit
Top Plastic Welders On The Market 
7 Best Plastic Welders - Reviews
1. Steinel ST34859 Plastic Welder - Top Overall Pick
As you know, to take the “overall top pick” slot the equipment really has to be top notch. So, why did we choose the Steinel Heat Gun Kit as the cream of the crop we hear you say?
Steinel is a market leader when it comes to manufacturing heat guns. It’s even rated higher by professionals than similar tools you can find out there that have been produced by other big-named power tool companies such as Bosch and Milwaukee.
We consider this piece of kit to be the optimum hot air plastic welder, as it checks so many boxes … and you’ll be even more amazed when we tell you that it’s actually the least expensive bit of equipment in our top choices list!
It boasts numerous features that make sure you’ll get your welding carried out quickly and efficiently.
You can alter the heat in increments of ten degrees, and you have three different airflow settings too – so you don’t need to go out and buy an extra regulator. You will have to get used to understanding the effects of air flow though, but basically it’s the case of getting to grips with the fact that the more air you push through the gun, the lower the maximum temperature.
This gun also has a digital temperature reading – not many plastic welders do – and, on top of that, it manages to push out an amazing 1500 watts! It should be mentioned that!
2. Polyvance 5700HT Plastic Welder - The Runner-up
This contact-based plastic welder really caught our eye – and we consider it to be the best rated airless plastic welder - especially as a lot of the contact-type welding kits aren’t usually the best quality and they are developed more for hobbyists than they are for professionals.
Contact plastic welders aren’t usually capable of carrying out larger jobs, and so aren’t often the ideal solution for automotive projects.
But this is where the Polyvance comes into its own. It is indeed a contact welder, but it offers professional output. Of course, this does come at a cost, but then you rarely get great service for free these days! That said, it’s not far off the price of most of the other hot air plastic welders.
If smaller projects are your thing, the Polyvance has a lot of plus points in store. It comes with its own temperature regulator – which is fabulous, considering the most difficult thing about plastic welding is ensuring that the temperature is hot enough to melt the plastic, but not too hot that it burns it. What a cool feature!
We like this one – perhaps you can tell?
3. Bondic LED UV Liquid - Best Value
We found this to be the best liquid UV plastic welder kit – yep, you heard it, liquid UV!
Although this isn’t exactly a “plastic welder” as you’d generally think a plastic welder should be, as other plastic welders tend to use a heat source to melt the plastic and therefore create a seal, the Bondic Pro Kit actually uses a completely different approach.
It applies the plastic in a semi-liquid state. You have to spread the liquid plastic using an applicator tube. This way, the Bondic acts more like a glue than a plastic, but the bonding material isn’t anything like a glue.
However, Bondic isn’t ideal for big projects. The bonding material is strong, but doesn’t have the super strength required for professional jobs – like automotive repair work.
Sometimes you have to make a few applications to ensure the join is strong enough. This is because you use several thin applications, as the UV light needs to be able to penetrate the agent … sounds very technical, but it really isn’t!
The kit gives you enough of that liquid plastic to make 150 applications – so pretty good value! And you can also purchase additional Bondic refills.
4. Weldy 1600W Professional Hot Air Plastic Welder
This brand is in direct competition with the more familiar Leister hot air gun – but it costs way less and can handle pretty much the same projects! So we think this offers high quality and dependability.
If you want to use the Weldy Hot Blast Torch for smaller projects, then you’ll find it works brilliantly well and with no issues. That said, if you’re after something with a bit more durability for industrial work – then you’d probably not opt for this one.
This piece of kit boasts the same temperature range as a Leister welder, but the higher temperatures probably don’t quite cut it; and the gun takes a lot longer to get to its maximum temperature too. Then again, this hot air gun is much more compact and lighter than some of the others.
Alas, the Weldy does only offer two attachments in the form of a speed and a round nozzle; so you’ll have to purchase any flat attachments yourself. The upside of this is that the Weldy gun can weld a much more versatile range of materials than some of the others.
5. Master Appliance ProHeat Series (PH-1400WK) Plastic Welder
The ProHeat series really is a versatile plastic welding kit. And we mean “kit”, as it does come with more attachments and accessories than most of the plastic welders featured in our list … but then it’s also one of the most expensive.
When you consider all the attachments this kit has to offer, you’d have expected it to feature a bit higher up in our list, wouldn’t you? Even though this is by no means a poor quality gun, the Master Appliance ProHeat Series just doesn’t perform as well as, say, the Steinel.
When we compare it to our top pick, you are getting pretty much the same functionality, apart from the fact that the Master Appliance is actually less powerful than the Steinel. Yep, the Steinel’s big ace up its sleeve is its extra 200 watts of power on offer. You might think this isn’t much of a difference, but when it comes to heating up plastic, it’s quite a game changer.
Another issue when comparing the Master Appliance with our top-rated brand is the flow of air. While the Steinel gives you the option to choose between three different settings here, in order to achieve the same function and performance with the Master Appliance you’ll have to buy a separate air flow regulator and attach it to your compressor. Of course, this shouldn’t be too much of a problem, as the various attachments and the sheer versatility of this tool makes up for it.
6. Hobie - Kc Welder Pro With Rod Stock
You’ve probably guessed from the name that this piece of kit is a little more professional than some of the others in our list. But we consider it to be one of the best inexpensive and easy-to-use plastic welder kits out there.
It’s probably the most specialised contact plastic welder! Yep, it’s a bit niche, but it’s also really good at its job.
It’s an incredibly effective piece of equipment that is much cheaper than some of the other products out there – if you’ve got fairly small projects to do.
It can only be used with polyethylene, so you do have to check that your products are OK to be fixed using this.
The operator has to feed the plastic themselves and they have no real control over the temperature … and that’s why the equipment is rated for use with just one type of material. As the Hobie plastic welder uses a mere 80 watts to function, this does limit the use for polyethylene, but it also stops the welder from melting the plastic way too quickly – a real plus point!
7. Gizmo Supply 1500w Plastic Welder
Our main thoughts about this one is that it really is a good, inexpensive little welding gun. It looks a little like the Weldy, but they really are two very different pieces of kit.
The issue with the Gizmo is that the plastic welder gets really very hot during use. So much so, that it is easier to burn through your plastic with this piece of equipment. But then you have to compare that with the fact that the Weldy has problems reaching maximum temperature. Swings and roundabouts really!
It takes a little time to get used the welder. The poor temperature control does make it a bit awkward to handle, but once you have familiarized yourself with its little foibles you can really benefit from those super-hot temperatures.
The Gizmo Supply 1500w is really ideal for speed welding – and not so great for tack or pendulum welding. Durability is a bit of an issue too … it does make you wonder (and should make you question) why the manufacturer offers a free replacement motor with every purchase! So, as you can imagine, the motor does have a longevity problem and does tend to wear out pretty fast — but, due to the aforementioned free replacement, it isn’t so bad.
Our Top Choice
Steinel Heat Gun Kit
So there you go – we think you can see why we’ve chosen the Steinel Heat Gun Kit as our overall top pick. What’s not to like?
With its adjustable temperature and really easy-to-read LCD display, the fantastic array of attachments and accessories, its super high power, various airflow controls and amazing price/performance ratio, you’d be mad not to go for this little number!
It was difficult to find another plastic welding system that can offer this much versatility and not actually be the most expensive piece of kit we reviewed. We think you’ll find the 1500 watts of output an absolute life changer when it comes to welding plastic components, and the ability to change the airflow was a real deal breaker for us.
So don’t delay! Get out there are buy one of these fabulous plastic welding kits today!