would you redo this mdf laminate

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Forum topic by maxhall posted 08-24-2016 02:54 PM 653 views 0 times favorited 12 replies Add to Favorites Watch
View maxhall's profile


38 posts in 1621 days

08-24-2016 02:54 PM

Hey guys building an outfeed extension table for my saw and I lamintated the two pieces of mdf together. I used clamps on the long edges and some weights in the middle but didn’t clamp the other two sides (forgetful/ignorance). I have about 8 more clamps than I used which is the frustrating part. Should have slapped some 2×4’s undernearth so I would have clearance on all 4 sides.

So my question is should I redo the mdf layers or don’t worry about it since it will be edged with wood and skinned with laminate. Here is a link to a video showing the extension I plan on building.

12 replies so far

View bbasiaga's profile


730 posts in 1415 days

#1 posted 08-24-2016 03:50 PM

Doesn’t need to be super flat for an out feed table. If you’re worried about it splitting you could add some screws which will be hidden under your laminate. I think it’s fine.


-- Part of engineering is to know when to put your calculator down and pick up your tools.

View jwmalone's profile


769 posts in 122 days

#2 posted 08-24-2016 04:01 PM

No one else would know. But you will, it will haunt your dreams at night and one day it will blow up. Na just kidding I think Brain is right, no big deal in that situation.

-- "Boy you could get more work done it you quit flapping your pie hole" Grandpa

View Underdog's profile


878 posts in 1455 days

#3 posted 08-24-2016 04:02 PM

I wouldn’t redo it. It’s not like it’s going to come apart. You’re just sliding wood across the top. Long as it’s flat enough, I’d not worry about it.

-- "woodworker with an asterisk"

View GR8HUNTER's profile


979 posts in 132 days

#4 posted 08-24-2016 04:06 PM

NO WORRIES …...just do it


View Cooler's profile


216 posts in 263 days

#5 posted 08-24-2016 04:41 PM

I laminated two sheets of MDF once and I pre-drilled countersunk holes on one sheet (about 8 inches on center).

I painted on the glue and then drove in all the screws. As I recall I just left the screws in. No clamps.

To make my job easier I drove several thin brads into once surface and clipped them so only about 1/16” was showing. It kept the boards from sliding around on the glue. This is a process I use frequently when gluing up. The nails never show and are not part of the joinery; just part of the positioning.

-- This post is a hand-crafted natural product. Slight variations in spelling and grammar should not be viewed as flaws or defects, but rather as an integral characteristic of the creative process.

View maxhall's profile


38 posts in 1621 days

#6 posted 08-24-2016 09:40 PM

Thanks everyone, I decided to drill and countersink a copious amount of screws… Should do the trick.

View TravisH's profile


438 posts in 1355 days

#7 posted 08-24-2016 09:45 PM

I don’t think you added enough screws. Perhaps you should wrap it a few times with duct tape also.

View jbay's profile


700 posts in 319 days

#8 posted 08-24-2016 09:51 PM

Yeah, you probably should put another screw in the middle of each square, just in case. LOL
I think your underestimating the strength of glue, that, or you just have a lot of time and enjoy doing stuff.. ;)

-- Many times my “MO” involves Judging others, playing God, acting as LJs law enforcement, and never admitting any of my ideas could possibly wrong or anyone else's idea could possibly be correct.--

View maxhall's profile


38 posts in 1621 days

#9 posted 08-24-2016 09:59 PM

I don t think you added enough screws. Perhaps you should wrap it a few times with duct tape also.

- TravisH
Great suggestion…going downstairs to add a few layers of tape

View DrDirt's profile


4135 posts in 3162 days

#10 posted 08-24-2016 10:04 PM

screws work – not just don’t hit any when you route groves for the miter slot extensions

Delamination was not going to be a problem even before.

-- 'Political correctness is fascism pretending to be manners' ~George Carlin

View firefighterontheside's profile


13068 posts in 1276 days

#11 posted 08-24-2016 10:10 PM

For something like that I don’t mess with clamps. Just glue and screws. You’ll be fine.

-- Bill M. "People change, walnut doesn't" by Gene.

View maxhall's profile


38 posts in 1621 days

#12 posted 08-24-2016 10:46 PM

I made sure to mark where the miter slots were, so I should be set on that front.

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