What did you LEARN at work today?

Discussion in 'Flooring Potpourri' started by Commercial Floor Rep, Mar 24, 2017.

  1. Steve Olson

    Steve Olson Hardwood/Laminate Guru Charter Member Senior Member

    I'd like to see what you were using to grind off the residue with, please!
     
  2. Chris Mha

    Chris Mha Charter Member Senior Member

    Steve this is one of the best I've found for adhesive removal. A PCD (polycarbonate diamond) doesn't look like much but super aggressive
     

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  3. Mike Antonetti

    Mike Antonetti I Support TFP Senior Member

    For this particular residue it was somewhat brittle, I'd say 80% hardness, so the blade I used didn't heat it up or smear it. That area with remaining hardwood got eaten up by the PCD blade, flipped the grinder upside down and it somewhat clogged the exhaust port of shroud, so just cleared the debris away. Can't really post a picture but the PCD choices on market are large 6 chip, or @ 12 small chip. I chose small chip, worked well grinding down, just a little slower to eat through to the slab. PCD's can be sharp when new, as they wear in they are less aggressive, I chose the worn one due to if I damage and chip off a tooth of the PCD, it's not a 300$ blade and I can tolerate an older blade chipping should that occur.

    So adhesive removal can be done with various other pieces of equipment, possibly the scrape a way, hexpin carbide chips, diamabrush(figured I'd throw that one in, not confident in it but maybe they'll catch up). There's a void of this tooling with this equip for handheld equip.
     
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  4. Mike Antonetti

    Mike Antonetti I Support TFP Senior Member

    The C is for crystalline, not that I have a clue what that means. On Chris's picture of his blade the top segment is intact. The PCD is the thin 2mm? square chip backed by some type of metal behind it, the other teeth look somewhat chipped.

    PCD is brittle, I've read a bit about it for oil drilling and their issues with breakage, also how they change formulas of the matrix to use for general tooling to aerospace. Same as any other product quality and applications vary.

    So if you hit a nail, the teeth can chip away leaving the support metal, I've got one blade that I can't throw away that most PCD's are gone but it still has the support structure could still work for brittle adhesive and the little wobble helps to impact into the coatings/adhesives. And when adhesive is gooey, these blades still melt the adhesive so that's when we have to add dust to coat the sticky to be extracted.
     
  5. Don Monfils

    Don Monfils PRO CARPET Charter Member

    I learned something new today about installing core-tec flooring.
    We often run into sliding closet doors that have the divider bracket , that screws through the floor.

    I was under the impression that with core-tec being a floating floor, you could not screw through the flooring and into the subfloor.

    I was told today from core-tec tech. that you can spot glue the flooring ( 12" area under the bracket) and then screw them down , without an issue. He said you could use their cork flooring adhesive, a good multi purpose adhesive, or PL Premium. ( that's what I ended up using )

    I have tried using hot glue to glue the brackets to the flooring ( pain in the ass)
     
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  6. Chris Mha

    Chris Mha Charter Member Senior Member

    You are correct Mike. A couple of the teeth are chipped. I had a ceramic ripout a couple months ago. Tile was installed over 1/4" lauan. The lauan was glued and screwed every 4". Lauan shredded during the rip. The PCD was the most effective way to remove construction adhesive and shredded plywood. It may have hit a few nails. That was an $80 cup. Well worth the loss in time saved
     
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  7. Mike Antonetti

    Mike Antonetti I Support TFP Senior Member

    I agree, it still works, it's just that there should be something more effective that doesn't fall off. Nails will destroy the blade, some other reasons. Similar to the scraper method with embedded nails, whether it's a 4" scraper, walk behind, or ride on, they will damage blades.

    Don, when I went to Pergo class the instructor got mad at the guy that wanted to fasten closet door brackets through the floor. I think it was the last straw, the guy was continuously wanting to do things the unrecommended way. The couple things I remember from that class was that and the Magnum Shear.
     
  8. kwfloors

    kwfloors Fuzz on the brain Charter Member I Support TFP Senior Member

    This works really well for cutting a lot of stairnose metal.

    Blade.jpg
     
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