Trains.com

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Best liquid plastic cement

8086 views
25 replies
1 rating 2 rating 3 rating 4 rating 5 rating
  • Member since
    August 2017
  • 19 posts
Best liquid plastic cement
Posted by dfdf1995 on Tuesday, April 7, 2020 10:07 PM

I haven't built a plastic kit in awhile. I just got the MDC Roundhouse Overland passanger cars I ordered on eBay (not available retail anymore :( ). Appreciate suggestions for liquid plastic cement to use. Also hints from anyone who has built these kits. TIA

Tags: kit , MDC , Platic
  • Member since
    July 2006
  • From: Bradford, Ontario
  • 15,797 posts
Posted by hon30critter on Tuesday, April 7, 2020 10:22 PM

Hi dfdf1995,

I recommend Tamiya's Extra Thin Cement. It works quickly and forms a strong bond. A little goes a long way. I don't usually use the brush that comes in the cap. I find that a slightly larger brush works much better.

https://www.towerhobbies.com/cgi-bin/wti0001p?I=TAMR8738&utm_source=bing&utm_medium=cpc&utm_term=towerhobbies&utm_content=80882863074083&utm_campaign=B_DSA_NB_Desktop&utm_id=bi_cmp-329510800_adg-1294125302030127_ad-80882863074083_dat-2332682637821408:loc-32_dev-c_ext-_prd-&msclkid=5812c6e401541937e775986effd20550

Dave

I'm just a dude with a bad back having a lot of fun with model trains, and finally building a layout!

Moderator
  • Member since
    June 2003
  • From: Northeast OH
  • 17,249 posts
Posted by tstage on Tuesday, April 7, 2020 10:27 PM

I use two different types: Testors Liquid Cement & Plastruct Plastic Weld.

For general kit assembly where appearance is paramount, I use Testors.  For a bond that will be hidden and/or for a connection where I want a REALLY strong bond that I don't EVER want to come apart, I use Plastruct.

Testors (or MEK) is thin and has really good capillary action - i.e. it will pull itself into a tight seam or hole, leaving a clean appearance after it dries.  I use a small natural hair artist brush to apply it.  The Plastruct is a little more viscous and more agressive so you have to be careful applying it.  I use the brush that comes with the jar for do that.

Tom

https://tstage9.wixsite.com/nyc-modeling

Time...It marches on...without ever turning around to see if anyone is even keeping in step.

Moderator
  • Member since
    June 2003
  • From: Northeast OH
  • 17,249 posts
Posted by tstage on Tuesday, April 7, 2020 10:33 PM

Dave,

Thanks for the heads up on the Tamiya liquid cement.  I'm a big fan of their paints so I might give that one a try when my current Testors bottle runs out.

Tom

https://tstage9.wixsite.com/nyc-modeling

Time...It marches on...without ever turning around to see if anyone is even keeping in step.

  • Member since
    April 2005
  • From: West Australia
  • 2,217 posts
Posted by John Busby on Wednesday, April 8, 2020 12:03 AM

Hi dfdf1995

I use Tamiya liquid cement depending on what I am doing I use the white lid the thicker one  or the green lid a thin one there is one with an orange lid but I don't know what thickness that one is.

I just use the brush attatched to the jar lid.

It is a very long time since I built any Roundhouse kits but they are usualy painted, and if you shake the box it will almost fall together.

The very simplicety of the kits is the trap for careless stupid mistake construction so take your time and don't rush.

Glue from the inside so you don't spoil the outside finish.

A little very carefully applied plastic cement is plenty.

It may be necassary to give any holes a little clean to make sure there is no paint in them and parts stick.

Use great care to get bogie (truck) mounting screws straight or you will end up having to drill an over size hole and sleeve with plastic tubing, or the truck won't sit straight, don't over tighten the screw or bogies won't pivot freely.

Also the plastic may have gone brittle with age so do take care in construction just in case.

regards John

  • Member since
    January 2017
  • From: Southern Florida Gulf Coast
  • 18,255 posts
Posted by SeeYou190 on Wednesday, April 8, 2020 12:31 AM

I really don't think there is a best. They all work in basically the same way, and different people have their preference.

I use Testors Liquid Cement For Plastic Models mostly because I find the odor the heast objectionable. I have used almost all the known brands, all have worked for me.

-Kevin

Living the dream.

  • Member since
    June 2005
  • 4,368 posts
Posted by Darth Santa Fe on Wednesday, April 8, 2020 12:46 AM

I've been using the same bottle of Testors liquid plastic cement for 10 or 15 years now.  It does a great job for me, and definitely has a long shelf life!

_________________________________________________________________

  • Member since
    August 2006
  • From: Franconia, NH
  • 3,130 posts
Posted by dstarr on Wednesday, April 8, 2020 1:18 AM

dfdf1995

I haven't built a plastic kit in awhile. I just got the MDC Roundhouse Overland passa get cars I ordered on eBay (not ad retail anymore :( ). Appreciate suggestions for liquid plastic cement to use. Also hints from anyone who ha e built these kits. TIA

 

I have used pretty much all of the liquid plastic cements.  I never noticed much difference between the various brands.  I bought a quart can of MEK at the Walmart paint department quite a few years ago and have been using that for gluing styrene plastic.  It works as well as any of the other plastic welder cements and is cheaper.  The quart can only cost $5, and it will last me the rest of my life.  The solvent is strong enough to cut thru grease and oil and finger prints so cleaning the joint is not an issue.  It will not cut thru paint.  If you paint the model before assembly you will need to sand or scrape the paint off the mating surfaces.  The solvent cements have no gap filling properties so the joint must fit tightly.  You may need to file the mating surfaces flat.  And file off mold parting lines and other lumps and bumps to make a good tight fitting joint.

  • Member since
    December 2003
  • From: Quebec
  • 983 posts
Posted by Marc_Magnus on Wednesday, April 8, 2020 5:05 AM

I scratch a lot in plastic, using Evergreen parts for the most but also Plastruct one and course some plastic ready to build models.

In Europe were I lived before, I used the simple Humbrol plastic glues work great in any aspect.

I have also used Plastruct liquid glue but I have no any special memories about it.

Now I use Tamiya and Mig liquid glue for a while, they work great, left no residues and are able to glue very little parts without effort.

Tamiya offer, thin, medium and heavy liquid glue all have different use but they all work great.

I have always used ready to use plastic glue, I have avoid to try to use chemicals product like MEK or other solvents; they have too much unknow backside against health and I have never have found the necessity to no use the ready to use glue.

I use them with micro tip brush a small one and a medium one for different use.

Tamiya and Mig glue dry extremely fast even if you need to wait a few hours to have a completely dry join; but the peieces can be manipulated quickly.

Moderator
  • Member since
    June 2003
  • From: Northeast OH
  • 17,249 posts
Posted by tstage on Wednesday, April 8, 2020 9:49 AM

Marc,

I may be wrong but I think you will find that the majority of liquid adhesives mentioned so far have varying degrees of MEK in them.  That's what makes them work well.  Some may also use solvents like acetone to accomplish the same task.

Tom

https://tstage9.wixsite.com/nyc-modeling

Time...It marches on...without ever turning around to see if anyone is even keeping in step.

  • Member since
    March 2002
  • From: Milwaukee WI (Fox Point)
  • 11,439 posts
Posted by dknelson on Wednesday, April 8, 2020 10:05 AM

Following the advice in a construction video on DPM structure kits by the well known modeler Miles Hale, I learned of Faller "Expert" and "Super Expert" plastic cements.  The long needle applicator is useful although it tends to get clogged.  For all I know chemically it is the same stuff as other makes, but it works for me.

https://www.faller.de/gb/en/Products/Model-layout-construction/Utilities/SUPER-EXPERT-Plastic-Glue-25-g-sid9758.html

Interestingly Faller also makes an "Expert" cement specifically for laser cut wood kits as well - same needle applicator but less prone to clogging it seems.

Dave Nelson

  • Member since
    July 2006
  • From: west coast
  • 7,667 posts
Posted by rrebell on Wednesday, April 8, 2020 10:18 AM

I started using  Weld-on 3 after trying many others after pro-weld left the market.

  • Member since
    January 2004
  • From: Canada, eh?
  • 13,375 posts
Posted by doctorwayne on Wednesday, April 8, 2020 12:27 PM

For years, I used ordinary lacquer thinner when working with styrene, but several years ago, they changed the components of it, and while it's still useful as a paint thinner and brush cleaner, it is absolutely useless as a cement for styrene.

I decided to try MEK, as several other modellers had commented on its usefulness with styrene, and bought a gallon of it.  While it's considerably more expensive than lacquer thinner (about $40.00 for a gallon of MEK), it works as well as the old lacquer thinner did.
However, it evapourates much more rapidly than did lacquer thinner, and as a result, is not all that useful when trying to bond items with a large surface area.

I tried to use MEK to mount some Kingmill building flats on .060" sheet styrene, as I've always done with the original laquer thinner, applying it to the styrene with a 1" brush.  However, the area first-done was dry before I was able to completely cover the styrene.
After making several applications, I did get it to work, but because some areas were quite wet when I placed the heavy paper images on the styrene, some were distorted when the MEK soaked through to the printed-on image.

Fortunately, the damage is not all that noticeable with the flats on the layout, as they're all in the background.

Wayne

  • Member since
    September 2004
  • From: Dearborn Station
  • 24,281 posts
Posted by richhotrain on Wednesday, April 8, 2020 12:29 PM

tstage

I use two different types: Testors Liquid Cement & Plastruct Plastic Weld. 

+1

Alton Junction

  • Member since
    September 2014
  • From: 10,430’ (3,179 m)
  • 2,311 posts
Posted by jjdamnit on Wednesday, April 8, 2020 1:39 PM

Hello All,

Micro-Mark® Same Stuff works for me.

I first came accros this product at the Original Caboose Hobbies. It was less expensive than the other brands.

At the time I wasn't aware of Micro-Mark® as tool supplier.

I now purchase it through them.

Hope this helps.

"Uhh...I didn’t know it was 'impossible' I just made it work...sorry"

  • Member since
    June 2018
  • From: Chicago, IL
  • 306 posts
Posted by Eilif on Wednesday, April 8, 2020 9:10 PM

Upon finding that MEK worked almsot excactly like Plastruct Plastic weld, I started refilling my Plastic Weld bottle with MEK and have been doing so for quite some time since.

Visit the Chicago Valley Railroad for Chicago Trainspotting and Budget Model Railroading. 

  • Member since
    March 2002
  • From: Milwaukee WI (Fox Point)
  • 11,439 posts
Posted by dknelson on Thursday, April 9, 2020 10:03 AM

doctorwayne

However, it [MEK] evapourates much more rapidly than did lacquer thinner, and as a result, is not all that useful when trying to bond items with a large surface area.

 

For large surface areas I have converted almost entirely to using very thin transfer tape, such as 3M makes.  I have it in 1" and 3/4" width rolls.  The only downside is that it is unforgiving and you are well advised to get it right the first time. 

It works with like materials, styrene to styrene for example, or different materials - paper to styrene, styrene to ABS plastic or wood, that sort of thing.  When building a laser cut wood kit recently, the "rolled roof" was peel and stick paper.  Because I had painted the paper I had my doubts about how good the stick was on the peel and stick other side.  So I belt-and-suspenders-ed it with transfer tape on the microplywood under-roof.  I don't think that roof will be peeling up any time soon!  

Dave Nelson

  • Member since
    January 2010
  • From: Denver, CO
  • 3,576 posts
Posted by Motley on Friday, April 10, 2020 3:27 AM

I tried the Tamiya Extra thin cement, and it just dries way too quickly. On parts that are already together its ok to use. But sometimes there are parts that need cemented seperatley, and I use Testors liquid for that.

Michael


CEO-
Mile-HI-Railroad
Prototype: D&RGW Moffat Line 1989

  • Member since
    July 2006
  • From: Bradford, Ontario
  • 15,797 posts
Posted by hon30critter on Friday, April 10, 2020 3:37 AM

Motley
I tried the Tamiya Extra thin cement, and it just dries way too quickly. On parts that are already together its ok to use. But sometimes there are parts that need cemented seperatley, and I use Testors liquid for that.

Hi Motley,

I agree that it does dry quickly. That's why I use a somewhat larger paint brush than the one in the cap. I haven't had any problems using it where the joints can't be lined up first, but I always add more cement once the joint is assembled.

Dave

I'm just a dude with a bad back having a lot of fun with model trains, and finally building a layout!

  • Member since
    October 2001
  • From: OH
  • 17,574 posts
Posted by BRAKIE on Friday, April 10, 2020 3:58 AM

I favor Testors liquid cement and I also use Plastruct plastic weld at times.

I still find Testors plastic cement in the red tube fills 90% of my needs for glue. I find Walthers Goo still works for some jobs..

Larry

Conductor.

Summerset Ry.


"Stay Alert, Don't get hurt  Safety First!"

  • Member since
    February 2019
  • From: Sacramento, California
  • 98 posts
Posted by L. Zhou on Sunday, April 12, 2020 10:41 AM

I find Faller Expert standard setting cement to work well when assembling kits, I tried using Testors plastic cement in the tube a while back and it was quite messy.

For windows I use the Testors Clear Parts Cement to hold the clear styrene in place, works very well if you try to apply the right amount. Too much and it ends up with a blob.

"No one realizes how beautiful it is to travel until he comes home and rests his head on his old, familiar pillow." -Lin Yutang

-

  • Member since
    July 2006
  • From: west coast
  • 7,667 posts
Posted by rrebell on Sunday, April 12, 2020 12:12 PM

jjdamnit

Hello All,

Micro-Mark® Same Stuff works for me.

I first came accros this product at the Original Caboose Hobbies. It was less expensive than the other brands.

At the time I wasn't aware of Micro-Mark® as tool supplier.

I now purchase it through them.

Hope this helps.

 

This is a copy of Pro-weld

  • Member since
    October 2008
  • From: Canada
  • 1,820 posts
Posted by cv_acr on Friday, April 17, 2020 11:27 AM

Marc_Magnus

I have always used ready to use plastic glue, I have avoid to try to use chemicals product like MEK or other solvents; 

What do you think the plastic glues are? All of them are some type of solvent.

Testor's liquid cement IS primarily MEK.

jjo
  • Member since
    March 2020
  • 147 posts
Posted by jjo on Friday, April 17, 2020 9:25 PM

My ignorance is showing but...What is MEK?   Thanks for helping this dolt!!!

  • Member since
    November 2002
  • From: "Steel, Steam and Thunder"Fort Wayne, Indiana
  • 1,177 posts
Posted by TheK4Kid on Friday, April 17, 2020 9:43 PM

Basically it is "nasty " stuff. I noticed one post using it in a quart can.

It is Methyl Ethyl Ketone

Make sure you don't inhale the fumes!!! It can give you some serious health problems!

I use Testors glue in the black bottle, and Testors glue for clear plastic windows, etc.

Testors in the black bottle may have a very minute amount of MEK in it, but not enough to hurt you.

The black bottle Testors glue lasts a long time !

  • Member since
    February 2017
  • From: Harrisburg, PA
  • 660 posts
Posted by hbgatsf on Saturday, April 18, 2020 7:20 AM

Does anyone know what the difference is between M.E.K. and M.E.K. Substitute?  The real stuff is getting harder to find.

Rick

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Users Online

There are no community member online

Search the Community

ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
Model Railroader Newsletter See all
Sign up for our FREE e-newsletter and get model railroad news in your inbox!