This is literally the only guide/ video I have been able to find on how to weld/melt two pieces of thick poly together. Thanks. 🙏

Great video, David! And to go a little further than one other comment, this is the only video I have been able to find for bonding inexpensive thin blue poly tarp together. Surely it also works for heavy duty poly tarps. I tested on an old, cheap, thin blue tarp, figuring if I could weld it together, I could weld any of the poly tarps together. The best temp setting I found was just a hair below the wool setting. Also, when bonding two overlapping pieces together to make a combined larger tarp, I found it to be critical to overlap the pieces for a width greater than the width of the iron (e.g., about 7+ inches overlap for a 5" wide iron), and critical to only bond inside the overlap, never to the edge of the overlap. Going to the edge of the overlap, or beyond, weakened the single tarp layer so much that it easily tore after bonding. Done properly, the bond was stronger than the tarp material. Also, I applied heat first from one side to form an initial weld, then afterward flipped the weld over and applied heat from the other side, with the hope of producing the strongest weld I could make. I trimmed off the excess flaps on each side of the weld to make the appearance a little neater. While there was some darkening and shrinking of the blue tarp in the bond area, my objective was simply to get a strong functional bond without weakening the unbonded area, not to get a perfect appearance. While it may be possible to "peel" the bond apart, the bond was so strong that when I tried to pull the pieces apart in the same plane (i.e., shear force), the tarp material tore while the entire weld remained intact. Weld shear strength is the strength that counts for most tarp end uses. Finally, the weld was "flexible," i.e., did not crack when bent or folded. Thanks, David!!

Edge hem is what I’m after for custom sizes and shapes repair’s etc. without breaking the bank. Looks like you’re on to something. I plan to put this technique to the test. I use a lot of tarps for various jobs and need a solution that’s not found on KZfaq and that’s practical. Thank you a lot my good man.

It is clear you are a "Good Man" in many ways. Thank you.

Thanks so much for sharing this technique. It's easy, familiar and the tools are accessible to most households.

Great video! I have been looking for some sort of tool or machine to do this kind of job, but your solution seems way more straightforward and easy. Thanks for sharing!

I used my daughters flat curling iron. during my "test welds" I discovered that if you use a damp/wet cloth it speeds up the cooling process and you can remove the parchment paper quicker without the plastic stretching or sticking to it... Back on here to find other peoples ideas, what they did

This video helped me a lot. Joining two plastic became easier. This method is effective unlike using clear cellotape which peel off with time. Thank you👍

I can now add this new skill to my ridiculous McGiver skill set!Thankyou sir! Asesome job!

First time I watched I thought, 'wow! why didn't I think of that' I salute you sir, this is amazing!!! Thank you...

You are a huge help with this! Doing this with my greenhouse cover to fix it! Thank you so much!

Thank you for taking the time to post this. I hope it helps with my project!

Thank you for the super good video! I need to resize a tarp and can't wait to try your technique! Thanks again and God bless!

Thanks David. Made my life a little easier ⭐️⭐️⭐️⭐️⭐️👍🏼

Great video. Bless you & the work you’re doing.😊

Thank you! I'm going to test this tomorrow. I hope your project went well.

I used to build RC airplanes when I was younger. The skin used is a plastic sheeting that is ironed onto the wings and body in much the same way as you are doing. the only real difference is that I used a cloth sock to surround the iron with, so i never had to use non stick paper. works great.

Awesome this is exactly what I needed !! Thanks :)

Getting my Parchment tomorrow - Thank You for your video!

..Cool technical to merge plastic sheets... Thanks a lot man! 👌🏼👍🏼👏🏼

Thank YOU Sir and God bless also

Thank you Thank you Thank you. This worked perfect!

grasias amigo es lo andaba buscando para un proyecto de construccion dios te bendiga from mexico

Might try it. No glue sticks to it. Blue tarp is worst there is. Does not last long. Silver tarp the best but even that does not stay water proof after some time of use. I done it all.

This was just the impetus I needed to complete my project of putting a temporary liner in the tub in my apartment so that I could wash out my silkscreens without worrying about staining the tub's finish. Using your technique, I was able to weld a PE drain insert to a clear LDPE sheet with a ring of tarp (also PE) material to finish it off. Thanks! You rock!

Perfect! Thank you.

I like the ending God bless too thanks.

Thank you for sharing! This was what I was looking for and will try it with baking paper (should me the same as parchment)

Very educational. Big Thanks!

Wonderful, I am trying to see if I can join wasted compost/soil bag to make a sheet, and then use it in outdoor small pond. Will try this idea, thanks.

Great job thank you

Thank you so much! This is exactly what I was looking for

Thank you so much Sir, I was missing that 'fold' part.

Great idea thanks for sharing!

Super useful, thank you

Thak you very much, I was in need of this help

Thank you for sharing. If you change the title of your video to "How to weld Polyethylene (or Polyethene) cheap lightweight tarps" or so, I am quite sure you will get much more views. I was trawling the net for methods of welding these some time back ago wanting to make a work tent, to no luck. Post date your upload. I found this video now by mere chance outside todays relevance. I had no luck back then finding other videos to my search criterias adressing this issue. I guess few knows how, inspite it is the most sold consumer type of tarp material. Wfr, Ogre

Made myself a bicycle cover today using this method. Might not last long, but have the size perfect, and cost about €1 to make. cheers! JB

Nice work and video!

If you had a temperature gun, you could use it to see how hot the plastic/Parchment paper was getting for the best bond.

The only video I can find,will try. I hope its water proof.

Has it withheld the test of time? Curios if the plastic is compromised by the sudden heat, and flaking away, similar to reaction concluding prolong sun exposure, respectfully

Thanks ., I suggest you a little help with clothes pins.You are awesome!

Thank you sir for your valuable answer. Because i search lot

Thanx!!!!!!!!!!!!

David i hope you are well. How high is your setting on the Iron? Give me your website please. I am trying to build a Biogas bag. All the best Gus

Parchment paper or tin foil seems to work and an iron. Similar to the industrial machines. A high heat source. A separator material like metal and then fusing your plastic together. Thanks for the video it helped me gather ideas together as I'm going to be sealing some thick plastic mattress covers

this is great i was looking to seem together different color pieces of plastic trash bags using 50 gallon trash bags to make one huge round piece of plastic about 203 x 203 inches in diameter one inch shot of 17 feet in diameter

Shit, you didn't need a fancy $80 hot air gun with $40 attachments, you're insane. Nice work.

Thank you.

Thanks

nice thank you so much'

Thanks I just found this. i am making a privacy wall for a screen room and want to cut plastic tarp was afraid of it fraying.

we had bought a very cheap iron and I believe we had the setting at High. it did not take all that much to melt the plastic once we got started

Thanks sir from india

Hi ..what is the temperature and thickness of the sheet in gsm

Nice video

Nice one

WOW!

seems like a good seam. i see what you did there

Thank you for this video. I have a similar project and this is very helpful. Are you using plastic pond liner? How thick?

thanks

What type of plastic is that?

What temperature setting did you use on the iron?

Thanks. What temp is the iron? Max heat?

Thanks. Any alternative to parchment Paper?

isn't parchment just wax paper? I am wondering if silicone sheeting would be satisfactory substiture for parchement paper? I have some of that that. I think it can withstand up to about 500 degrees temp? I think parchment paper is rated for up to about 450 degrees faranheit?

But what is the the whit sheet tnat used for the joning tha plactic???

Can't you use baking paper? Good job

Isolation red tape is very strong

THERE ARE MANY PEOPLE THAT NEED TO WELD PLASTIC SHEET TO STORAGE WATER. THANKS

How is this holding up?

Doing some research before i use an old btoken pool floaty to make a cool bikini top for a music festival ! I was hoping this would work thNk u for the video confirming so!!!

0:42 (and other parts too) can i get captions? *update:* reading other comments: parchment paper (1:56 so meeeee hehe 2:15 did u try using tape to hold those folds together??

what was it parker paper??

It loses its shininess

Sorry, no temp. Specified

David a lot of things are available where you are, the expression is wrong, I am certainly that where you are, plenty of things are available that you can't find where you come from. David, I rather you say the United States cause Honduras is part of America, Hispanic American, would you agree?

Thanks