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Automotive Plastics/Questions Answered by Expert Octavio Torres

SubjectDate Asked
plastic adhesive4/16/2012
  Q: How can I re-attach a plastic stud broken from the cover below the glovebox in my 2007 Honda, ...
  A: >PP< (Polypropylene). There is no adhesive for PP. As explained in past posts the only effective ...
repairing/replacing plastic studs4/6/2012
  Q: What is the correct adhesive to re-connect a broken plastic stud on a 1984 corvette upper inside ...
  A: I never make use of any adhesives nor glues to repair or replace a broken stud. by experience I know ...
plastic housing cracked on side mirror1/18/2012
  Q: My nmae is Robert. I have a 99 Chevy S10. It came with aftermarket Sport Scene mirrors on it. The ...
  A: Those housings accept neither adhesives nor glues that may be worth trying. Instead, I would try ...
plastic types12/5/2011
  Q: i know there are 3 types of plastic that bumper covers are made of. what are they and how do i ...
  A: bumpers are made of: >PP< polypropylene, TPO (THERMOPLASTIC OLEFINE),TPU (THERMOPLASTIC URETHANE,PU ...
headlamp housing11/23/2011
  Q: Two curiosties, what type of plastic makes up the "back half" or housing side of the assembly? When ...
  A: headlamp manufacturers use >PP< polypropylene plus a reinforcing load >PP+T20< for instance, the T20 ...
Volvo Reservoir tank10/24/2011
  Q: I was told I have a seep in the plastic overflow tank of the radiator in my 2001 Volvo and that is ...
  A: one thing is an overflow tank and connected to it by a rubber hose, a radiator. These two parts are ...
adhesive5/16/2011
  Q: Is there an adhesive or plastic welding that will bind two pieces of plastic together? I tried ...
  A: there may be one at least or a method to weld them either chemically or by thermal fusion. However, ...
honda headlights5/14/2011
  Q: I drive a s2000 2004 I have noticed the plastic that surrounds the headlight is coming off. I took ...
  A: Fran, if the problem is with plastics, there must be an affordable a solution. I ignore the type of ...
Dashboard coverstock material identification5/9/2011
  Q: Octavio I am restoring a 1973 Datsun 240z and planning to repair the damaged dashboard. I have ...
  A: OK, remember that polyvinilydene chloride >CPVC< is used in hot water tubing and >PVC< in cold ...
Dashboard coverstock material identification5/7/2011
  Q: Octavio I am restoring a 1973 Datsun 240z and planning to repair the damaged dashboard. I have ...
  A: That skin in made of >PVC< and the foamy substrate of Polyurethane. I ignore what tradenames are ...
Cracked screw post4/2/2011
  Q: Have had difficulty replacing damaged right rear tail light of 94 Buick LeSabre Ltd. After several ...
  A: the best way to repair a broken post whether severed from the very base or in a low place near of ...
BMW TRIM3/18/2011
  Q: I need to modify the trim around the factory stereo by glueing strips of plastic to the existing ...
  A: You are right Franck, you need to get and cut those ABS strips. The adhesive : dissolve ABS ...
Plastic trim repair '87 BMW 325i3/10/2011
  Q: I need to modify the trim around the factory stereo by glueing strips of plastic to the existing ...
  A: I think we will need to take some pictures of the trim , an explanation of the kind of modifications ...
Mazda 626 interior fabric on door panel is loose1/24/2011
  Q: I have a 2002 Mazda 626, 4 door, with leather interior. Since the first year I had the car the ...
  A: Using adhesives to join polymer (plastic) surfaces sometimes is hard to deal with. Therefore, we ...
Taillights lenses1/23/2011
  Q: I have a classic truck and cant find a indicater lense. I have the left side one. How do i go about ...
  A: there may be a chance to make the other side lens but I need some pictures of the one available. ...
how to paint auto acrylic1/10/2011
  Q: what product would i use to put a clear coat on acrylic tail lights? also, when i dissolved the ...
  A: I have never painted acrylic lenses but as with any other paintable polymer, you must degrease the ...
plastic repair1/3/2011
  Q: I have a 2004 silverado ext. cab 4x4. On the inside of the door trim panel there is a bracket ...
  A: The markings you found may indicate that the external side is made of integral skin (PVC) and the ...
1989 VW Golf tail light project12/24/2010
  Q: i am cutting apart a few sets of jetta tail lights to make a custom set that resemble old rabbit ...
  A: sorry for this christmas delay. I think your light housings are not coded for polymer ...
2002 Mazda 626 turn signal cover/lens glue12/17/2010
  Q: As I was brushing some ice off of the right turn signal lamp the lens/cover fell off. Can I glue it ...
  A: To join the the two parts, get some methylene chloride. wet the broken places, press them both and ...
methylene chloride11/18/2010
  Q: I've not been able to find this. Can you tell me what product to look for, where?
  A: this is sold under the name:acrylic cement by tap plastics: ...
How to fix a rear view mirror with a plastic button?9/11/2010
  Q: My rear view mirror fell off my windshield and I tried to fix it by buying a rear view mirror repair ...
  A: plastics are low energy substrates to accept any adhesives,in fact adhesives rarely work well in ...
Automotive Plastic Panel Repair8/1/2010
  Q: Trying to determine how to repair cracked automotive interior plastic panels. There are know marking ...
  A: If your car was made after the year 2000, there must be an identification code somewhere in the ...
Lens on Taurus 3rd brake light6/2/2010
  Q: The shortcan you advise me on an adhesive to attach the plastic lens housing onto a 3rd brake light ...
  A: you are right. Methylene chloride is de proper adhesive. This substance is a water-like liquid which ...
Rear view Mirror - button glued into mirror assembly5/11/2010
  Q: The mirror fell off of the window. The metal "button" that needs to be treated and re-glued to the ...
  A: Most rear view mirrors attached to windshields do not use any glues in the button assy. However, ...
repairing interior plastic4/2/2010
  Q: As we were loading something into our Equinox, it scraped along the inside of the back plastic by ...
  A: Polypropylene interior trim and panels, like those in the Equinox can only be painted for ...
Affordable reproduction of tail light lenses2/12/2010
  Q: Octavio, In an answer dated 1/28/2009 you answered a query on reproducing tail light lenses. In ...
  A: Unfortunately, I need the help of a busy neighbor and colleague who owns a tail light repair shop to ...
auto body glue1/31/2010
  Q: While travelling about 40 mph in my 2003 Jeep Liberty, I was side-swiped (hit-and-run) by a driver ...
  A: There is no glue nor any adhesive to replace your metal or plastic fasteners. my suggestion for you ...
CRV Mirror Base Repair1/19/2010
  Q: Torres The base plate which supports the mirror assembly (see picture:horizontal part with 4 large ...
  A: to exactly determine what plastic the base is made of ,you have to take the base off the door. to ...
Broken LH mirror housing/91 Honda prelude1/13/2010
  Q: Someone knocked my driver side mirror off..seems to be broken at the base..otherwise the assembly ...
  A: almost always we get dissapointed when trying to fix plastics with adhesives. This is due to the ...
cracked Sprinter rear A/C housing1/4/2010
  Q: The rear A/C housing on my Dodge/MB Sprinter passenger van is made of a rigid, gray unpainted and ...
  A: I have repaired many AC housings and found ALL were made of Polypropylene. I think your's must be ...
98 honda prelude rear-view mirror housing1/3/2010
  Q: okay i bumped my mirror off the mount and im trying to figure out if i can take the mirror housing ...
  A: sorry for a late answer (health has not been o.k. these days. but now in the up &up) I understand ...
Broken tail light lens..12/19/2009
  Q: I was wondering if I could glue the tail light lens on my 03 Alero. Someone bumped my car and broke ...
  A: tail light lenses are made of >PMMA< , which stands for polymethyl methacrylate, a plastic that can ...
ABS plastic sheet11/28/2009
  Q: I have a bowler tomcat off road race car that I am renovating. the pick up sides are flat aluminium ...
  A: you are right. ABS is not the best polymer for this application. Despite having butadiene (a rubbery ...
plastic headlight lense11/24/2009
  Q: Why do the lenses get milky/cloudy? Can it be cleaned? Seems to be common in late 90's to early ...
  A: lenses get dull for various reasons including: photodecomposition, micro-chipping because of gravel, ...
Mirror10/26/2009
  Q: my Nissan Maxima 2004 driver side mirror is broken,and I wouild like to try to repair it myself ...
  A: normally you can not achive good( strong) repairs in mirrors by using any glue. The only solution I ...
interior rear panel broken10/21/2009
  Q: I would like to repair my rear panel on my 2005 montana its broken in one spot
  A: please dismantle and remove the panel from the door. Then look in the rear part of the panel and ...
Identifying auto plastic9/30/2009
  Q: I have a 1991 Nissan Pathfinder with a crack in the front windshield cowl vent grille. It is black ...
  A: From experience, we know Nissan uses two polymers to make cowls: ABS+pc copolymer in older models ...
Crack in Bumper II9/12/2009
  Q: You asked me to find out what kind of plastic that the 2006 Sebring rear bumper has. I don't have ...
  A: Ok Al, though the reparing conditions are not the best, let us try it this way: materials:40 watts ...
best way to handle polyurethane foam waste9/10/2009
  Q: I have some leftover polyurethane foam scraped off of automobile insides and I wonder what's the ...
  A: John, PUR foam is the material you are familiar with and is available in two forms rigid and ...
best way to handle polyurethane foam waste9/9/2009
  Q: I have some leftover polyurethane foam scraped off of automobile insides and I wonder what's the ...
  A: Recycling PUR is as far as know, limited to rebonding for flexible foam, used in furniture ...
Crack in bumper9/2/2009
  Q: 2005 Chrysler Sebring Convertible. Rear bumper. My wife (not me), backed into a post and caused a ...
  A: Normally,Pushing a dent from the inside is the first thing you have to do. However this operation ...
Glue Auto Body Parts8/22/2009
  Q: A portion of my front air dam trim cannot bolt back into place. Can I glue it back to the ...
  A: we need you to provide more information in order to try to get a reliable and affordable solution ...
gasket?8/11/2009
  Q: i have a 2000 3/4 ton ford four door. i had some body work done to it about a year ago, and after i ...
  A: sorry for changing this question from private to public. I think it has no private information and ...
mirror7/26/2009
  Q: 1997 chev c1500 passenger mirror, on the interior there is a plastic cover with no screws. how do i ...
  A: I have been trying to see if there is an equivalent version for your car in my country but I have ...
Plastic radiator tank repair - BMW K1200S.7/26/2009
  Q: I'm currently rebuilding an '05 model-year BMW K1200S motorcycle. Unusually for a motorcycle, the ...
  A: on the tank polymer identification. Radiator tanks are normally made of a 6 carbon polyamides >PA ...
Gloss Black Door Pillars a Success!7/18/2009
  Q: This post is a follow up to my 7/9/09 post. Hi Octavio This information is for you to let you know ...
  A: CONGRATULATIONS! Steve.you have given us a nice example on how to avoid buying new spare plastics. ...
Gloss black plastic door pillars7/9/2009
  Q: Octavio I have read all the posts and answers and there is nothing about a 2000 caravan with plastic ...
  A: Steve, the color of a plastic is not an indication of the kind of plastic we are dealing with, this ...
Gloss black plastic door pillars7/5/2009
  Q: Octavio I have read all the posts and answers and there is nothing about a 2000 caravan with plastic ...
  A: Although is not a general rule, these pillars are made of Polyurethane, a polymer which is a ...
Most efficient tool to scrape off polyurethane7/5/2009
  Q: I've been building car roofs and I filled the interior of the roofs with hard polyurethane foam, but ...
  A: I have successfully , dealt with some stubborn Polyurethane stains by heating steel with the heat ...
Rear side marker/park light lens cover7/1/2009
  Q: How do you remove plastic lens cover on the rear side marker,which is also the parking light? Car is ...
  A: Normally tail light lenses are joined to the housing with a strong adhesive called methylene ...
Help needed please6/22/2009
  Q: i really hope that you can help me with this, i need to produce high electrostatic adhesion force ...
  A: I am afraid that I ain't the right person to answer your kind question. However, as far as plastics ...
repair of plastic mirror5/23/2009
  Q: the outside car door mirror of my Hyundai has a crack from being hit. How can i repair it (product ...
  A: The mirror housing might be made of either ASA or ABS polymer. Do not use any glue or adhesive. Just ...
Plastic bumper cover identification5/14/2009
  Q: I have a bumper cover off of a 1990 BMW 325is which is in need of repair. The bumper cover is part ...
  A: I think you are dealing with polyurethane >PU<, a plastic that will respond fine when it comes to ...
Weather protectant accident4/1/2009
  Q: I bought a car waxer the other day and tried using it to apply weather protectant on the body of my ...
  A: although I think this seems to be be a duplicate question, I would use some sttodart solvent ...
2004 Chevy silverado rear door panel3/16/2009
  Q: I have a 2004 chevy silverado and the rear door panel is cracked, I coach baseball and I figure it ...
  A: this panel seems to be made of polypropylene, a repairable plastic.To fix this crack you must take ...
glove compartment stuck2/12/2009
  Q: I can't open my glove compartment on my 2005 odessy, the keys don't work. Not sure what to do ...
  A: all glove boxes are not the same & I am not familiar with the one you mention. However, those boxes ...
reproducing old taillight lens1/28/2009
  Q: Octavio, In restoring older cars, it is sometimes difficult to find good used lens. I have seen ...
  A: Taillights and headlights are made by the injection molding process, a technique where you heat-melt ...
TOYOTA CUP HOLDER1/20/2009
  Q: one of the rings on the rear cup holder broke. Its a clean break. It is under pressure as it is ...
  A: There is not a good adhesive for this application. We, plastic repairmen, usually deal with similar ...
tailight material12/3/2008
  Q: who makes a material in red to fabricate a set of flat taillight lens for my 1971 camaro? thanks
  A: I suppose this question comes from U.S. and you do not own an injector. Then, go to: ...
WOOD DASH TRIM DODGE CARAVAN11/19/2008
  Q: I have been told that there are two types of wood dash trim kits - the molded type and the cheaper ...
  A: Although I am not an expert, I think you may look for that kit at www.autoanything.com or at ...
Trim Panel 1997 Mercury Grand Marquis11/15/2008
  Q: I'm not sure if I have enough information for you to answer the question. The trim panel on my ...
  A: I would Consider replacing the panel. Try JC WHITNEY for replacements. A temporary solution before ...
Triumph 2500s rear trim10/13/2008
  Q: I have a panel like this that has snapped in two pieces in the middle. It has no markings as to the ...
  A: may be I was not clear enough last time. I suggested not welding the ribs in the visible part just ...
1999 Taurus plastic sideview mirror casing10/10/2008
  Q: My wife backed out of the drive and caught the electric side mirror on a tree. It split the plastic ...
  A: most plastics repair operations are a problem of cohesion and not adhesion. Therefore my procedure ...
Triumph 2500s rear trim10/9/2008
  Q: I have a panel like this that has snapped in two pieces in the middle. It has no markings as to the ...
  A: it helps a lot. Automotive parts made before 1996 rarely bear an identifying recycling code. ...
1997 Mercury Headlights outter lenses.10/7/2008
  Q: 1997 Mercury Headlights outer lenses are very cloudy. I there a way they can be cleaned or ...
  A: Plastic Polycarbonate lenses tend to become cloudy over the years. This may be due to scratching in ...
gluing tail light plastic9/23/2008
  Q: I have an old Porsche which has a tail light that runs the whole width of the car. The seam at the ...
  A: Tail lights are normally made of acrylic polymer and are easily glued with the appropriate adhesive: ...
what kind of plastic...8/28/2008
  Q: Greetings; I would like to glue something to the inner plastic door panel on a 2000 Jeep Cherokee. ...
  A: Please link to this site: http://i87.photobucket.com/albums/k139/cjtorres12/Tapizado.jpg where I ...
what kind of plastic...8/26/2008
  Q: Greetings; I would like to glue something to the inner plastic door panel on a 2000 Jeep Cherokee. ...
  A: I´ve repaired a lot of inner panels for different makes and models but so far I have not been faced ...
plastic glue for headlight trim 1994 GMC van8/23/2008
  Q: What glue if any would you recommend for the gluing the trim around the headlight of a 1994 GMC van. ...
  A: In fact, I would try to weld any plastic before using any adhesive. Headlight trims are almost ...
plastic door guard trim8/18/2008
  Q: The piece of trim along the door on the outside of my Acura has been pulled away and needs to be ...
  A: If the trim or molding is not twisted outwards,I would use the adhesive Sikaflex 221. it is a ...
degración de plástico POM - Homopolymer8/12/2008
  Q: Buenas noches, Me he enterado de algunos casos que con un mismo proveedor de PVT el material se ...
  A: Apreciada Meritxell, Ignoro que es PVT. Asumo que querrias decir PVC por su fácil degradación ...
wheel well plastic needs repair8/4/2008
  Q: While doing some custom work on my car, my friend cut away part of the black plastic surrounding the ...
  A: You are right, the only way to fix a PP mud guard is by welding. If the cut is a big one I suggest ...
glove compartment lock is broke7/30/2008
  Q: how can i get into my glove compartment when the latch is broke that controls the lock to open the ...
  A: sorry for not answering earlier.There are as many different glove boxes as car models with different ...
Epoxy caulking7/29/2008
  Q: I drove through something that appears to be epoxy caulking. It splashed on the outside of my cars ...
  A: Debbie, To make sure whether it is really an epoxy compound you may have to get a sample of the ...
Quick Question7/24/2008
  Q: I just purchase a new tail gate for my truck. I need to paint it to match the color of my white ...
  A: I suppose your tail gate is the plastic-reinforced polyester type. You must always use an ...
passenger side mirror7/24/2008
  Q: My car's passenger side mirror broke in two at the base. Is it safe to put it back together using ...
  A: Juan,Some Solid-housing mirrors are easy to repair by just using hidden screws to unite base and ...
radiator repair7/20/2008
  Q: I have a 97 Chevy PU truck Silverado V-8 1500. There is a bad crack in the passenger side plastic ...
  A: Radiator tanks for trucks are not available in the market. you can only get these for passenger cars ...
passenger side mirror7/5/2008
  Q: My car's passenger side mirror broke in two at the base. Is it safe to put it back together using ...
  A: I think I need more info. in order to help you with the problem of your mirror. First it is ...
squeaky plastic parts6/29/2008
  Q: Octavio. My wife's 1996 Chevy Blazer has a plastic center console. When she rest her arm on it or ...
  A: It is the first time I have heard of such noise in this car model and make.However I think it is not ...
Plastics Suitable for Air Cleaner Box6/7/2008
  Q: what vacuum formable plastics are suitable for air cleaner boxes that mount to throttle bodies. ...
  A: plastics as polystyrene,ABS,PMMA and others, traditionally processed by making use of vacuum,are ...
CRX Fenders and Header Panel6/5/2008
  Q: I would like to identify the plastic used in the fenders and header panel of my 1984 CRX, and ...
  A: I have never repaired CRX fenders and front panels. However, when I have to face the problem to deal ...
Repair of the lugs (ABS plastic) on a car wheel dressrim6/3/2008
  Q: Octavio, Could you advise me on the type of adhesive that will satisfactorily repair broken ABS ...
  A: Gary, heat-welding is the right way to repair ABS.The problem in doing this operation is that ABS(a ...
1970 Mercedes 280SL Headlight trim5/15/2008
  Q: We are tryng to repair the headlight trim for a 1970 mercedes 280SL. I have been told it is made of ...
  A: sorry for a delay in answering, I am having problems with my server. Methyl chloride is not a ...
under engine plastic guards4/28/2008
  Q: i have a 2000 vw jetta tdi-the three piece under the engine plastic splash guards is all busted up ...
  A: I suppose you have tried getting those guards even in junk yards and found nothing. So, the only ...
cadillac door removal3/21/2008
  Q: I own a 1994 Cadillac Sedan Devile "4.9L v8" and am wanting to remove my front doors to get to the ...
  A: This question seem to asked to the wrong expert. Remember that I can only help with automotive ...
2007-2008 Dodge Ram 1500 Tail Lights3/20/2008
  Q: I have a 2006 Dodge Ram 1500 and I want to put the newer 2007 or 2008 tail lights on it. How do I ...
  A: This category was created to help friends with AUTOMOTIVE PLASTICS REPAIR issues only.If you have ...
Polypropylene water Tank3/9/2008
  Q: G'day! I've been told that when welding plastics, there can be NO moisture in the area to be welded. ...
  A: according to my experience, this does not seem to be an automotive application. A 3/4" wall ...
Polypropylene water Tank3/7/2008
  Q: G'day! I've been told that when welding plastics, there can be NO moisture in the area to be welded. ...
  A: I suppose you know that welding is accomplished by using the same polymer(in this case ...
Repair of rigid ABS plastic auto dash2/29/2008
  Q: How do I join broken ABS plastic pieces back together again so that they are reasonably strong as ...
  A: The best way to repair a broken dash is welding the torn pieces with a 40 watts soldering iron whose ...
2003 Subaru Outback right fender well cost?1/31/2008
  Q: Mr. Torres: You know how much a fender well for a 2003 fender well costs? What does the fender well ...
  A: to the first question, I am sorry I ignore it. On the second, the fender well is designed to keep ...
epoxy removal12/26/2007
  Q: The drivers side mirror came off on my car.. I didn't have the money to buy a new mirror right off ...
  A: if you applied the epoxy in a place you can not see, just pull off with force (epoxies normally do ...
ABS Plastic12/12/2007
  Q: Please let me know what material can I use to repair parts made of ABS plastics. Is there any ...
  A: The best way to weld ABS and any other thermoplastic is with the same material.That is, with a ...
Identifying type of plastic11/2/2007
  Q: I would like to identify the type of plastic used on the door caps and rocker panel covers on an ...
  A: in order to identify those plastics you must detach them from the body. In the back side look for a ...
Voyager 20059/25/2007
  Q: Hola, con una piedra le pegué al lado delantero de mi camioneta, lo que ocasionó se rompiera el ...
  A: Apreciada Maria, Si tienes las siguientes herramientas creo que te puedo ayudar: -soldador manual de ...
little compartment above glove compartment..7/30/2007
  Q: 2004 Toyota Sienna, little compartment above glove compartment, the door is broken off only hinges ...
  A: I am not familiar with the little compartment lid you mention, but I think this is a common case of ...
information regarding vacuum forming made auto components/parts6/15/2007
  Q: My question to you is what are the Vacuum Forming made products or parts/components used in ...
  A: most automotive vacuum-made plastics include:trim and door panels,trays,and some flat covers and ...
radiator tank3/23/2007
  Q: my radiator was leaking, my car is in the shop but the mechanic just fixed the radiator. He said the ...
  A: Not all tanks can be repaired successfully,nor they sell them as spare parts.I think changing the ...
HELP2/28/2007
  Q: Que tal octavio, podrias informarma de como podria fabricar un cofre para carro, de carbono, ...
  A: Apreciado Artemio:El tema de la fabricación de piezas algo complejas como la que sugieres implica un ...
Scotchgard Paint Protector Film2/24/2007
  Q: Do you have any opinion on this prodect instead of the mask for a auto front protection
  A: As we suggest in our plastics repair manual http://www.bumper2bumperplasticsrepair.com/ Paints are ...
Restoring plastic11/14/2006
  Q: How can I restore the shine on the plastic of a four wheeler, (red Yamaha Rhino) I used car wax ...
  A: Jose, Car wax commonly accumulates in texture depressions. I assume this is your problem. My ...
auto-plastics mainteinance10/25/2006
  Q: Octavio, I have heard some silicon-like products used in dashboards are to blame when cracks appear. ...
  A: Sophie, I have heard the same theory since I begun repairing. I can tell you that I have not done ...

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Octavio Torres

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Expertise

I can answer any question concerning automotive plastics repair on condition that the specific part polymer is identified. However, I can also help in the identifying process of any plastic used in automotive applications (for both body work and under-the-hood). I can't answer a question if it is based only on make or model unless full details are provided.

Experience

Two decades working as automotive plastic repairman in my own business

Publications
THE INTERNATIONAL AUTOMOTIVE PLASTICS REPAIR MANUAL

Education/Credentials
Plastics technician.

Past/Present Clients
BMW

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