Tenax7R

I've heard a lot of good things about Tenax 7R. What's the best method and tool to apply it to plastic?

Capillary applicator is the tool of choice. I use the below linked. You can probably find one at a hobby store.

Also, Tenex7R is pure dichloromethane (methylene chloride), so if you know a chemist they can probably get you some as that is a very common reaction solvent.

https://www.amazon.com/Flex-I-File-0711-Touch-Flow-Applicator/dp/B00AQMG9LQ

^^^ What he said. ^^^

I use that exact same applicator for my Tenax. Works beautifully.

Cl(VII) said:

Capillary applicator is the tool of choice. I use the below linked. You can probably find one at a hobby store.

Also, Tenex7R is pure dichloromethane (methylene chloride), so if you know a chemist they can probably get you some as that is a very common reaction solvent.

https://www.amazon.com/Flex-I-File-0711-Touch-Flow-Applicator/dp/B00AQMG9LQ

Click to expand...

Well Not exactly! Tenex7R is a diluted form of Methylene Chloride. As are all commonly available Hobby Market "Solvent Welding Agents" . It is possilbe to buy pure Methylene Chloride in gallon cans from most Sign Supply houses. It is also my understanding Tenex7R was being discontinued by the manufacturer.. Perhaps they have reconsidered?

Capillary action applicators are indeed the best way to apply this water thin agent. MC can also be applied with a fine #1 to #3 real hair red sable brush. I personally prefer the Brush application as I have better control over where it is applied.

If you are really interested in "Working with Plastics" and their proper Adhesives Please visit www.narhams.org, from the left hand drop down menu go to the library section looking for the Tech-Tip folder. Tech Tip-017 Working with Plastics is an in depth study of many different types of plastics and their joining with themselves and differening materials. Also check out the extensive photos file listed as TT-017 pics.

What I use: (or something similar)

https://www.amazon.com/Corning-Disposable-NonSterile-NonPlugged-Pasteur/dp/B005MIPYLA/ref=sr_1_1?s=industrial&ie=UTF8&qid=1457997354&sr=1-1&keywords=pasteur+pipette

Micromeister said:

Well Not exactly! Tenex7R is a diluted form of Methylene Chloride. As are all commonly available Hobby Market "Solvent Welding Agents" .

Click to expand...

According to its MSDS, Tenax7R is 98-100% Methylene Chloride. I had to go to the Wayback Machine to find a copy of the MSDS.

Others (and the associated MSDS)

Plastruct Plastic Weld
Methylene Chloride 80-90%
MEK 5-15%
https://plastruct.com/wp-content/uploads/2015/06/MSDS_PPC_2.pdf

Plastruct Bondene
Methylene Chloride 30-60%
Methyl Acetate 30-45%
https://plastruct.com/wp-content/uploads/2015/06/MSDS_BOND_2.pdf

Plastruct Weldine
Dipentene Turpene Hydrocarbon 60-85%
https://plastruct.com/wp-content/uploads/2015/06/MSDS_WELD_2.pdf

Tenax 7R
https://www.setonresourcecenter.com/msds/docs/wcd00025/wcd02597.htm

Kleen Strip Premium Stripper is 60-100% Methylene Chloride, but may be thick and viscus (may actually be an advantage if using as a glue)

https://www.kleanstrip.com/uploads/documents/GKS3_SDS-4015.34.pdf

Micromeister said:

Well Not exactly! Tenex7R is a diluted form of Methylene Chloride.

Click to expand...

sooner.boomer said:

According to its MSDS, Tenax7R is 98-100% Methylene Chloride.

Click to expand...

Thanks for pulling up the MSDS for Tenax7R to confirm the composition...no reason for misinformation. I bought my first bottle a few years ago, and when I opened it I knew within about 5 sec that I had wasted $6 on that oz or so. That smell is very distinctive, and one I am quite familiar with having used literally 1000s of liters of it over the last 15 years. I can pretty much play name that solvent (mixtures included) by smell at this point. After that first bottle was gone I've taken to using the reaction grade stuff (99.8+%) which we get for about $6/L.

Also, the stuff is stelar for solvent welding fins on for some plastics...my D-Region Tomahawk will never pop a fin.