RC

Robatoy

30/06/2009 8:23 AM

End grain on MDF

I have seen a few queries on edge-treating MDF. Here is a wonderful
solution:

A sign-maker had me do some 3D sculpting on my CNC using 1" MDF as a
substrate. Needless to say, it exposed a whole whack of fuzzy grain.
He told me that was easy to deal with if one used
Zinser BullsEye Stain covering white ceiling primer.
We did.
It dried ready for sanding in 2 hours (I suppose that could vary with
temperature and all that).
It is a bit messy as it is oil-based..at least it needs mineral
spirits for clean-up.
The result was absolutely effortless, fast, cheap, and just great.

Works like a charm. If you didn't know this already, you do now.

r

Happy CANADA DAY


This topic has 12 replies

RC

Robatoy

in reply to Robatoy on 30/06/2009 8:23 AM

30/06/2009 9:16 PM

On Jun 30, 3:51=A0pm, FrozenNorth <[email protected]>
wrote:
> Artemus wrote:
> > It hides the burn marks on cherry quite well too.
> > Art
>
> So does black paint.
> ;-)
> --
> Froz...

*gasping for air*

RC

Robatoy

in reply to Robatoy on 30/06/2009 8:23 AM

30/06/2009 8:51 AM

On Jun 30, 11:39=A0am, "Dave in Houston" <[email protected]> wrote:
> "Robatoy" <[email protected]> wrote in message
>
> news:[email protected]...
>
> >I have seen a few queries on edge-treating MDF. Here is a wonderful
> > solution:
> > Zinser BullsEye Stain covering white ceiling primer.
>
> =A0 =A0 Pigmented Shellac.
>
> Dave in Houston

Sure, easy for you to say.

MD

Morris Dovey

in reply to Robatoy on 30/06/2009 8:23 AM

30/06/2009 11:55 AM

SonomaProducts.com wrote:

> Is it just profiled edges that have a problem or do you have an edge
> fraying problem with straight cut edges also?

Probably just a bit of smudging on his CAD drawing.

;)

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/

Sb

"SonomaProducts.com"

in reply to Robatoy on 30/06/2009 8:23 AM

30/06/2009 9:52 AM

So it's route, paint, sand?

I recently had some shapes cut on my buddys full sheet CNC from 3/4
MDF. What he handed me is super clean on all edges and I know he
didn't sand anything because I showed up right as he finished and
picked it up off the table myself. It was just a typical end mill type
cut edge, no profile.

Is it just profiled edges that have a problem or do you have an edge
fraying problem with straight cut edges also?

On Jun 30, 8:23=A0am, Robatoy <[email protected]> wrote:
> I have seen a few queries on edge-treating MDF. Here is a wonderful
> solution:
>
> A sign-maker had me do some 3D sculpting on my CNC using 1" MDF as a
> substrate. Needless to say, it exposed a whole whack of fuzzy grain.
> He told me that was easy to deal with if one used
> Zinser BullsEye Stain covering white ceiling primer.
> We did.
> It dried ready for sanding in 2 hours (I suppose that could vary with
> temperature and all that).
> It is a bit messy as it is oil-based..at least it needs mineral
> spirits for clean-up.
> The result was absolutely effortless, fast, cheap, and just great.
>
> Works like a charm. If you didn't know this already, you do now.
>
> r
>
> Happy CANADA DAY

Aj

"Artemus"

in reply to Robatoy on 30/06/2009 8:23 AM

30/06/2009 7:19 PM

It hides the burn marks on cherry quite well too.
Art

"Robatoy" <[email protected]> wrote in message
news:[email protected]...
> I have seen a few queries on edge-treating MDF. Here is a wonderful
> solution:
>
> A sign-maker had me do some 3D sculpting on my CNC using 1" MDF as a
> substrate. Needless to say, it exposed a whole whack of fuzzy grain.
> He told me that was easy to deal with if one used
> Zinser BullsEye Stain covering white ceiling primer.
> We did.
> It dried ready for sanding in 2 hours (I suppose that could vary with
> temperature and all that).
> It is a bit messy as it is oil-based..at least it needs mineral
> spirits for clean-up.
> The result was absolutely effortless, fast, cheap, and just great.
>
> Works like a charm. If you didn't know this already, you do now.
>
> r
>
> Happy CANADA DAY

Ff

FrozenNorth

in reply to Robatoy on 30/06/2009 8:23 AM

30/06/2009 1:12 PM

Morris Dovey wrote:
> SonomaProducts.com wrote:
>
>> Is it just profiled edges that have a problem or do you have an edge
>> fraying problem with straight cut edges also?
>
> Probably just a bit of smudging on his CAD drawing.
>
Must have used SketchUp.
g,d&r

--
Froz...

Ll

"Leon"

in reply to Robatoy on 30/06/2009 8:23 AM

30/06/2009 10:57 PM


"SonomaProducts.com" <[email protected]> wrote in message
news:9ae08535-fce3-437d-ad42-722ea831171c@k20g2000vbp.googlegroups.com...
So it's route, paint, sand?

I recently had some shapes cut on my buddys full sheet CNC from 3/4
MDF. What he handed me is super clean on all edges and I know he
didn't sand anything because I showed up right as he finished and
picked it up off the table myself. It was just a typical end mill type
cut edge, no profile.

Is it just profiled edges that have a problem or do you have an edge
fraying problem with straight cut edges also?

Any edge "will" have a problem if you add a water based product directly to
it.

tt

tom

in reply to Robatoy on 30/06/2009 8:23 AM

30/06/2009 9:48 AM

On Jun 30, 8:23 am, Robatoy <[email protected]> wrote:
> I have seen a few queries on edge-treating MDF. Here is a wonderful
> solution:
>
> A sign-maker had me do some 3D sculpting on my CNC using 1" MDF as a
> substrate. Needless to say, it exposed a whole whack of fuzzy grain.
> He told me that was easy to deal with if one used
> Zinser BullsEye Stain covering white ceiling primer.
> We did.
> It dried ready for sanding in 2 hours (I suppose that could vary with
> temperature and all that).
> It is a bit messy as it is oil-based..at least it needs mineral
> spirits for clean-up.
> The result was absolutely effortless, fast, cheap, and just great.
>
> Works like a charm. If you didn't know this already, you do now.
>
> r
>
> Happy CANADA DAY

Try some thinned drywall compound. Dries faster, too. Tom

Ff

FrozenNorth

in reply to Robatoy on 30/06/2009 8:23 AM

30/06/2009 3:51 PM

Artemus wrote:
> It hides the burn marks on cherry quite well too.
> Art
>
So does black paint.
;-)
--
Froz...

Di

"Dave in Houston"

in reply to Robatoy on 30/06/2009 8:23 AM

30/06/2009 10:39 AM


"Robatoy" <[email protected]> wrote in message
news:[email protected]...
>I have seen a few queries on edge-treating MDF. Here is a wonderful
> solution:

> Zinser BullsEye Stain covering white ceiling primer.

Pigmented Shellac.

Dave in Houston

Di

"Dave in Houston"

in reply to Robatoy on 30/06/2009 8:23 AM

30/06/2009 1:26 PM


"tom" <[email protected]> wrote in message
news:a61ed9d8-be88-4243-83c0-d109f099f54b@g19g2000yql.googlegroups.com...

> Try some thinned drywall compound. Dries faster, too. Tom

I dunno. That's water-based and I'd think it might cause some swelling.

--
Dave in Houston

Ll

"Leon"

in reply to Robatoy on 30/06/2009 8:23 AM

30/06/2009 10:55 PM


"Robatoy" <[email protected]> wrote in message
news:[email protected]...
>I have seen a few queries on edge-treating MDF. Here is a wonderful
> solution:
>
> A sign-maker had me do some 3D sculpting on my CNC using 1" MDF as a
> substrate. Needless to say, it exposed a whole whack of fuzzy grain.
> He told me that was easy to deal with if one used
> Zinser BullsEye Stain covering white ceiling primer.
> We did.
> It dried ready for sanding in 2 hours (I suppose that could vary with
> temperature and all that).
> It is a bit messy as it is oil-based..at least it needs mineral
> spirits for clean-up.
> The result was absolutely effortless, fast, cheap, and just great.
>
> Works like a charm. If you didn't know this already, you do now.

Yup, the ends need to be sealed with anything except a water based product.


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