By: Steeves  09-12-2011
Keywords: Adhesives

On January 25, 2010, Winnipeg was hit with a blast of Arctic air, along with a LOT of snow, most which seemed to settle on or around our office.  NO PROBLEM!  We have our handy Toro snow blower to help dig us out! This machine’s been with the company so long, it has more seniority than 60% of our staff, so it’s not entirely surprising to find some of the parts on this machine are wearing out.

While in the process of cleaning our tiny parking lot, I noticed the chute (where the snow is ejected from the machine) was wobbling around, and about to fall off.  Upon further inspection, I discovered that the chute is attached to a sort of welded flange.  This flange is welded to the main body of the snow blower, and after years of use a section of the flange had broken off.

My first reaction  was “We need a welder, stat!”  but since I don’t have a welder (yet), and it would take too long  to take it to someone with a welder, I had to find another way.

Peter, our Salesman and resident adhesives expert suggested we glue it back together.  So that’s what we did!  After all, we stand behind our adhesives, right?

So we took a few minutes to discuss the details of our application:  Will this MP55310 bond metal to metal?  Turns out it’s not necessarily bonding “metal” to “metal”, since these are painted parts.  We did NOT remove the paint, so technically this is a ‘paint to paint’ bond.  Stay tuned for an upcoming article on “What Are You REALLY Bonding” for some good information on adhesives.

Anyway, back to the story.   e gathered the materials we needed to make our repair:

  • MP55310 Methacrylate Adhesive from ASI®
  • Manual Dispensing gun
  • Short Mixing Tube
  • C-clamps
  • disposable putty knife
  • plastic gloves
  • disposable shop rags/paper towels for cleanup

We removed the chute from the snow blower to allow easy access to the flange.  We used a wire brush to clean around the flange and particularly the damaged area from any loose debris or dirt.  We then positioned the flange section and began applying the adhesive all around the chute opening, making sure to fill the break completely.

Once the glue was applied, I used a putty knife to smooth out the adhesive on the underside of the flange (and to remove any excess).  After 30 minutes, the adhesive was already beginning to cure.

The very next day, I re-assembled the machine, fired it up, and moved a mountain of snow in –30C temperature.  The glue had been curing for just over 18 hours, and it held fast.

UPDATE!  - March 19, 2010

Well, the snow is almost gone now but we’ve had two major snowfalls since this article was posted.  I’m proud to say that the repair is holding up beautifully!  No signs of loosening of the bonded parts, no flexing, bending, chipping or peeling.  It’s a sight to behold!

In fact, today we had some visitors come to the office to see for themselves!  Yup, they heard that we’d repaired our snowblower’s discharge chute with glue, and they just had to see it with their own eyes.  They were amazed!

So there you have it.  You CAN repair painted metal parts with a methacrylate adhesive from ASI.  Awesome stuff.

Keywords: Adhesives

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