Carpet Over Dried PL Residue

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David Carter
Posts: 1824
Joined: Mon Jan 01, 2007 7:20 am
Location: (East) Tennessee, USA

Carpet Over Dried PL Residue

#1 Post by David Carter »

I'm pretty much finished gluing up my O10, and I'm noticing that on all the joints where I tried to wipe the PL while it was still wet to clean as I went, I am now left with a rough, bumpy hard coat of smeared PL residue. The bumps aren't big by any means. They're almost like little bubbles.

My question is, if I'm going to carpet the cab, I shouldn't have to worry about the surface being perfectly smooth, right? Am I OK as long as I don't have big beads in the joints? Or do I need to make sure everything is perfectly smooth? I would think that the carpet would mask the minimally bumpy surface, but I'd hate to find out otherwise after having carpeted the whole thing.

Thanks.
Dave

Built:
- Omni 10 (S2010 + piezo array)
- 2 x DR250 (DL II 2510 + melded array)
- 2 x Titan 39 (BP102 - 14"W)
- 2 x Titan 39 (3012LF - 20"W)
- 4 x DR200 (Delta Pro 8B + melded array)

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Harley
Posts: 5758
Joined: Mon May 08, 2006 2:45 pm
Location: Christchurch, New Zealand - Authorised BFM Cab Builder

Re: Carpet Over Dried PL Residue

#2 Post by Harley »

David Carter wrote:The bumps aren't big by any means. They're almost like little bubbles..
Well there's Good news ....and then....there's Bad news.

First of all the BAD NEWS!

If your bumps are over a micron high....you have to scrap your cab and start all over again! :shock:

Sorry :cry:

Now for the GOOD NEWS!

I was joking :roll:

Here's the Mo News!

So long as all the PL taken off with a scraper on your flat surfaces and exposed edges, and then sanded, you'll be fine.

I use a box cutter knife to cut out the real obnoxious blobs in the joints where the carpet is going - LIGHTLY cut with the blade laying against the surfaces INTO the joint and you're done.

If in doubt, stick two bits of wood together with glue and use a scrapo of carpet to trial glue on............

Piece of cake really

Harley
ImageSemi-retired: Former Australia and New Zealand Authorised BFM cab builder.

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David Carter
Posts: 1824
Joined: Mon Jan 01, 2007 7:20 am
Location: (East) Tennessee, USA

Re: Carpet Over Dried PL Residue

#3 Post by David Carter »

Harley wrote:First of all the BAD NEWS!

If your bumps are over a micron high....you have to scrap your cab and start all over again! :shock:

Sorry :cry:
Don't do that to me! I'm too young for a heart attack :)!
Harley wrote:So long as all the PL taken off with a scraper on your flat surfaces and exposed edges, and then sanded, you'll be fine.
Man, I'd better get to work if I have to get all the PL of the flat surfaces! Should be to hard to sand it off of most surfaces (just time consuming), but it's all over the horn flanges, and I can't reach my sander all the back into the horn.

Well, better get started...
Dave

Built:
- Omni 10 (S2010 + piezo array)
- 2 x DR250 (DL II 2510 + melded array)
- 2 x Titan 39 (BP102 - 14"W)
- 2 x Titan 39 (3012LF - 20"W)
- 4 x DR200 (Delta Pro 8B + melded array)

Mark Coward
Posts: 2601
Joined: Mon May 15, 2006 10:47 am
Location: Memphis, TN

#4 Post by Mark Coward »

As another poster recommended, get an old fashioned paint scraper - the type with the "hook" blade. Usually available in a couple of sizes, the smaller size is handy for getting into tight spots. I wouldn't worry about getting it super smooth for carpet, just use some coarse sandpaper.
Mark Coward

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Tim A
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Joined: Sat Jan 13, 2007 5:23 pm
Location: SE Michigan, Licensed BF Builder

#5 Post by Tim A »

Utility knife (box cutter), scraper, wood chisel, anything of that ilk. A wood chisel takes it off the flat surfaces very easily.

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David Carter
Posts: 1824
Joined: Mon Jan 01, 2007 7:20 am
Location: (East) Tennessee, USA

#6 Post by David Carter »

Tim Ard wrote:Utility knife (box cutter), scraper, wood chisel, anything of that ilk. A wood chisel takes it off the flat surfaces very easily.
I had tried using a chisel, but the results left a lot to be desired. This morning I took a file to the chisel and sharpened it up, and it's working quite weill now. I think I'll be in OK shape after all.

Thanks for the tips, everyone!
Dave

Built:
- Omni 10 (S2010 + piezo array)
- 2 x DR250 (DL II 2510 + melded array)
- 2 x Titan 39 (BP102 - 14"W)
- 2 x Titan 39 (3012LF - 20"W)
- 4 x DR200 (Delta Pro 8B + melded array)

User avatar
Tim A
Posts: 3663
Joined: Sat Jan 13, 2007 5:23 pm
Location: SE Michigan, Licensed BF Builder

#7 Post by Tim A »

David Carter wrote: I had tried using a chisel, but the results left a lot to be desired. This morning I took a file to the chisel and sharpened it up, and it's working quite weill now. I think I'll be in OK shape after all.

Thanks for the tips, everyone!
Yes, a dull wood chisel is worse than no wood chisel.

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