Skip to main content

Glue Pull Dent Removal

My little Dustbin suffered a parking garage bump from a much bigger SUV with a bumper above the level of mine - dunno who dunnit.  To pass the yearly road safety inspection, all crash damage must be repaired, but the law doesn't say anything about the quality of the repair...

Since I didn't want to spend money on an old clunker, I yanked the dent out with hot glue and dowel rods.  This works, because modern paint adheres extremely well to the metal.  It really doesn't come off easily.

There are many videos on Yootoob about no repaint hot glue dent pulling.  Everyone wants you to buy their fancy tools and special glue.  You don't really need any of that and prolly have everything you need in your tool box already.  I recommend watching a couple of those videos before you start, to give you some ideas.

I know how to do serious body work, I can weld anything that will melt and spray paint whatever needs paint, but where I live now, I don't have the tools - or the time.

A door is something you slam - therefore, if one would use Bondo to fill a door or hatch dent, then after a few months (if you are lucky) it may pop off and then you need to do it all over again.

Due to the two long creases in the hatch, I did not expect the dent pull to be a perfect job and just wanted it to look better - and pass the vehicle road worthy inspection.  I actually managed to pull most of the creases out with the big round dowels.  A shaped dowel would have done a better job of it though.

The dowel was a garden rake handle. I sawed a few pieces off one end and attached wire loops and then used the remainder as a lever, braced against a wood block and the bumper.  This method according to O'l Archimedes, could move the earth.  It worked a treat.

Pulling a dent this way, is a rather disconcerting experience, since the force is really huge and the dowel pops off with a loud bang.  A bottle of alcohol is needed to clean the panel and it helps to remove the glue.  You need a sharp nylon scraper (and a hair dryer on medium) to get the glue off the car.  You can to some degree control the strength of the pull, by how long you wait for the glue to cool.  If you wait too long, then you can pull little pieces of paint off, so don't!

Later, I also fixed two deep little door dings with a single pull each - I just put my knee against the car and yanked, but you need to be fairly strong, to pull a glue tab off without a big lever and in the middle of a car panel, you may not have a handy and strong fulcrum position for a wood block.

The pictures say it all:






Good enuff...  It could be improved with a sharp wooden pin and a mallet to drive the high spots back, but that will take many hours.

I just need some wax car polish to get the last of the glue off.


Lessons Learned
Dent pulling works best on rounded surfaces.  It is ideal for fixing a rounded fender bender.

Dent pulling may not be satisfactory on a flat panel, like a door - easier to push it out from the inside.  When a door gets banged in, the frame  usually also bends a bit.  The result is that when you pull/push the dent out, the panel may bong back and forth like an oil can.  If that happens, you need to stretch the door a little with a hydraulic press.  You may be able to fudge that by bending the edges of the door in a tiny little bit with a rubber mallet, to pull the panel tighter.

Be careful where and how you place a fulcrum for your pulling lever, or you may end up with a new dent.

Take it slow, work from the outside in and don't wait too long for the glue to go completely cold, since then it may adhere so strongly, that you pull little flakes of the paint off.  If you think the pull dowel is stuck too strongly, use a hair dryer on medium, to warm the panel up, or pour hot water over the work area.

You don't have to do it all at once.  If you are not damaging the paint, then you can work on the spot a little bit over multiple evenings, or weekends.

If you don't care too much, then it will look like my photos - much better, but a little bit wavy.  If I would paint the lower part of the hatch matt black, or stick a reflecting tape chevron on it to warn the next 1d10t, then one should not notice the wavy repair.

Have fun!

Herman

Comments

Popular posts from this blog

Parasitic Quadrifilar Helical Antenna

This article was reprinted in OSCAR News, March 2018:  http://www.amsat-uk.org If you want to receive Satellite Weather Pictures , then you need a decent antenna, otherwise you will receive more noise than picture. For polar orbit satellites, one needs an antenna with a mushroom shaped radiation pattern .  It needs to have strong gain towards the horizon where the satellites are distant, less gain upwards where they are close and as little as possible downwards, which would be wasted and a source of noise.  Most satellites are spin stabilized and therefore the antenna also needs circular polarization, otherwise the received signal will flutter as the antennas rotate through nulls. The helical antenna, first proposed by Kraus in 1948, is the natural solution to circular polarized satellite communications.  It is a simple twisted wire - there seems to be nothing to it.  Various papers have been published on helix antennas, so the operation is pretty well ...

To C or not to C, That is the Question

As most would know, the Kernighan and Ritchie C Programming Language is an improved version of B, which is a simplified version of BCPL, which is derived from ALGOL, which is the Ur computer language that started the whole madness, when Adam needed an operating system for his Abacus, to count Eve's apples in the garden of Eden in Iraq.  The result is that C is my favourite, most hated computer language , which I use for everything. At university, I learned FORTRAN with punch cards on a Sperry-Univac, in order to run SPICE, to simulate an operational amplifier.  Computers rapidly lost their glamour after that era! Nobody taught me C.  I bought the book and figured it out myself. Over time, I wrote a couple of assemblers, a linker-locator, various low level debuggers and schedulers and I even fixed a bug in a C compiler - not because I wanted to, but because I had to, to get the job done!   Much of my software work was down in the weeds with DSP and radio modems...

Unlock CRA PDF Forms

Unlock Canada Revenue Agency PDF Forms It appears that there is a relatively new PDF feature to prevent casual copying and saving of a file and that some programs save PDF files with these foolish features active by default.  Many forms from the Canada Revenue Agency are locked in this way, which makes it difficult to do one's taxes, since one can fill the form, but cannot save it.  One can only print the form.  It should be possible to print to a file or export it to a new PDF file, but it is far better to reset the annoying anti-taxpayer flags, since the 'printed' form cannot be edited easily any more and I always manage to make a mistake or three that need to be corrected after review. If there is a Linux (virtual) machine handy, install qpdf and use it to reset the silly flags: $ su - password # dnf update # dnf install qpdf # exit $ qpdf --decrypt lockedfile.pdf unlockedfile.pdf One doesn't need a password to unlock these flags, so the fix is instant. La voila! He...