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Dewalt Clamps black steel staining Glue ups.

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Forum topic by anthm27 posted 05-25-2019 08:10 AM 706 views 0 times favorited 12 replies Add to Favorites Watch
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anthm27

864 posts in 1498 days


05-25-2019 08:10 AM

I recently purchased some awesome Dewalt quick grip type clamps,
The problem is the black metal that the spine of the clamp is made of, when in contact with glue sends the glue black and stains the timber during the glue up, Please see attached a pic of a recent glue up that had the problem.
Anybody experienced this? Or have a solution?
Thanks in advance.
Regards
Anthony


12 replies so far

View Don W's profile

Don W

19206 posts in 2955 days


#1 posted 05-25-2019 09:47 AM

Tape them

-- http://timetestedtools.net - Collecting is an investment in the past, and the future.

View chriscarter's profile

chriscarter

12 posts in 479 days


#2 posted 05-25-2019 11:00 AM

I have this happen with black pipe clamps all the time. Oak is particularly bad. It’s generally not a problem if you are hand tool woodworking because you wind up planing it off. If there is no further finishing work to be done after glue-up, then put some painters tape on the bar so it doesn’t contact the glue. No contact = no chemical reaction.

View bondogaposis's profile

bondogaposis

5398 posts in 2739 days


#3 posted 05-25-2019 12:27 PM

Iron + wood tannin + moisture = black stain. Remove something from the equation and the black stain will not form. Usually the easiest is to prevent contact between the iron and the wood.

-- Bondo Gaposis

View doubleDD's profile

doubleDD

8387 posts in 2431 days


#4 posted 05-25-2019 01:19 PM

I never had that problem but good to know about it. Hope you get this solved.

-- Dave, Downers Grove, Il. -------- When you run out of ideas, start building your dreams.

View SMP's profile

SMP

1034 posts in 293 days


#5 posted 05-25-2019 01:46 PM

Yeah masking tape on the bars or a piece of wax paper between.

View ibewjon's profile

ibewjon

556 posts in 3181 days


#6 posted 05-25-2019 02:43 PM

That is why I use galvanized pipe for my clamps. IMC conduit is the best, lighter and stiffer than schedule 40 plumbing pipe or regular conduit

View anthm27's profile

anthm27

864 posts in 1498 days


#7 posted 05-25-2019 10:04 PM

Thanks to everybody for the comments, I am happy its not just me who has the problem.
Seems I will need to tape these things, as I said in the beginning , extremely good strong and versatile clamps.
Just the blackening is painful.
Regards
Anth

View robscastle's profile

robscastle

6131 posts in 2592 days


#8 posted 05-25-2019 10:19 PM

And thats a yes from me.

If you have a Look at MTMWood on you tube he uses PVC conduit for set up in conjunction with his clamps.

https://www.youtube.com/watch?v=fvgaxVwAjBg

In fact maybe you shouldnt look as you will be wanting to make some impressive cutting boards next !!

-- Regards Rob

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anthm27

864 posts in 1498 days


#9 posted 05-25-2019 10:35 PM


And thats a yes from me.
If you have a Look at MTMWood on you tube he uses PVC conduit on his clamps.
https://www.youtube.com/watch?v=fvgaxVwAjBg

In fact maybe you shouldnt look as you will be wanting to make some impressive cutting boards next !!
- robscastle

Yer, very nice flag albeit with a CNC machine, I,d bet he sells them for a bomb.

View Grumpy's profile

Grumpy

25304 posts in 4239 days


#10 posted 05-26-2019 12:15 AM

Anthony, I have used glad wrap sometimes with good results.

-- Grumpy - "Always look on the bright side of life"- Monty Python

View anthm27's profile

anthm27

864 posts in 1498 days


#11 posted 05-31-2019 11:15 PM



Anthony, I have used glad wrap sometimes with good results.

- Grumpy

Cheers Tony, that is a good idea,
Have a good weekend.
I,m Off to Aus for a couple of weeks, let me know if by chance your about northern NSW
Cheers
Anth

View sansoo22's profile

sansoo22

111 posts in 42 days


#12 posted 06-01-2019 03:00 PM

I found an interesting idea in a YouTube comment for using black pipe in your clamps. Cut a thin grove in a PVC pipe and then cut it into 2 to 3 in lengths. You can snap those little pieces over the black pipe as you need them and slide them into place at the glue joints. It has worked out quite well for me. I have a drawer full of these now and use them in large glue ups.

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