How to get this finish?

[Boyan Silyavski]

MDF looks nice when sealed with Acrylic Primer , used in cars and then finished at least with 2 component Polyurethane Paint. Or car paint.

If perfect finish is desired, it should be treated exactly like painting an expensive car. Thick primer, Thin Primer, etc...

Having said that the typical industrial finish is Polyurethane.

[andy_con]

name or link me up with some products ;)

MDF looks nice when sealed with Acrylic Primer , used in cars and then finished at least with 2 component Polyurethane Paint. Or car paint.

If perfect finish is desired, it should be treated exactly like painting an expensive car. Thick primer, Thin Primer, etc...

Having said that the typical industrial finish is Polyurethane.

[Boyan Silyavski]

name or link me up with some products ;)

Don't you have a local professional paint shop or a place where they sell car parts to mechanics? These are the right places to find all cheap and compatible.

I did not get if you would be painting professionally or not, but i assume yes.


1. You need a proper Gun/s . Saving money here will make you sorry later. These are the guns i made a present to my wife's father. he is a carpenter and uses them exactly for the same purpose like you. This is just basic setup. Just to compare i am using a cheapo chinese gun for crap and 400euro 3m gun for important stuff.

You will need that sizes nozzles for the primers and the other for the actual painting

2 x Devilbiss SLG-620 Compliant Spray Gun Gravity Feed 1.3mm/1.8mm Paint/Primers



2. Any normal car primer will do / not if you use epoxy, you will need a better one.

Synthetic High Build Primer Grey Fast Drying 1L/5L


3. Hempel is a good quality polyurethane paint. Though as i said your local paint shop is your best bet, as there paint will be around 18GBP, and they will have the proper thinner and base. hempel for example is double the price.

In short, locally=cheaper, better

[Ger21]

There are no short cuts to a really good finish. And it all starts with the material, and preparation.
MDF is probably not the right material for a high quality paint finish. High density fiberboard is a better choice, as it's less porous.

Any wood type product is going to need all of the pores sealed, followed by a heavy coat of primer, sanding, filling, more primer, and more sanding before it's ready for a top coat.

As I mentioned earlier, I seal my MDF with epoxy.
My method will eliminate most priming and sanding, but it's time intensive.
Cut your part about .1mm oversize, and leave an onion skin of about .25-.5mm thick. Do not remove it from your machine!!
Brush a heavy coat of epoxy over all surfaces, especially cut edges. Wait a few minutes, and do it again, so it soaks in thoroughly.
Wipe off any excess from the top surface, as you don't want to have to sand or machine it away.
Let cure.
Cut your part to the finished side.
The edges should be smooth, like a hard plastic, right off the machine. Prime and paint.

[JAZZCNC]

Cut your part about .1mm oversize

Gerry you do realise this is UK.?. . . . We have moisture on top of moisture here.! 0.1mm in MDF will last about 30's before it's changed shape again. . .Lol

Also got to realise we are still 20yr behind USA and we don't have such places like Wall mart so materials you take for granted like HDFB are like rocking horse droppings around here and cost twice as much every where else in world if find supplier and then they will be to order only.!! . . . . And you'll have to order 100sht's. . .

[Ger21]

Gerry you do realise this is UK

Not for much longer, according to the news here.

[JAZZCNC]

Not for much longer, according to the news here.

Don't want to distract OP thread but got to answer this.!

Don't believe everything your told Gerry. The UK has whole is taking a Hit yes but we are also known by another name GREAT BRITAIN and this is for good reason.

The GREAT comes from the fact we don't lie down roll over or shy away from what needs to be done. No matter how hard or at what initial cost to our self's.
The EU is dying and the sooner it's realised by the rest the better and stronger the whole of Europe will become.

Our country, The UK, is one of the most tolerant and multi cultural country’s in the world but the simple fact is that we are FULL. The people have being crying this for long time and finally had enough of being ignored by the low life spineless politicians who supposedly run our Country and the whole EU bureaucracy so have spoken out.!! . . . . In your country this would be known as patriotism or being a patriot.

In UK/EU we are called racists.!! . . . . Yes unfortunately it released or gave voice to few true vial racists but we have or will stuff them back in the box as they pop up.

We are not racists, very far from it. Lots of our friends or mine at least are either from EU, Asia or some other far flung place. We embrace and tolerate cultures others won’t.
We are also not Anti Immigration. We just want sensible immigration but the Open border policy just isn’t working here. It’s strangling our country and changing it in ways which are not British. We are and should always be BRITISH First fore most while all the rest that makes us GREAT coming close second.

We are not even Anti EU in many ways. We signed up all those years ago to European union for Trade but it’s become monster that is something far more than that and not what we signed up for.
It’s out of balance and with power resting in the hands of too few (or the One strong lady and her muppets) who have no interests but there own rather than for the union has whole. But they are Politicians so shouldn’t expect any less.!!

We don’t want our country run from Brussels by people we didn’t elect or Faceless politicians we’ve never heard of. We have enough trouble getting our own spineless shower of shit politicians of all side to listen so what chance have we when Brussels is selectively deaf.!

At the moment Our current Prime minister hasn’t got the balls to stand up and make happen what the people voted to happen, despite the fact he was the one who started all this.! The result didn’t go his way so he’s not playing anymore which is typical of upper class spoilt child and in line with Yellow belly coward.!

BUT the WHOLE world and The REST of the EU please take note We are GREAT BRITAIN and sooner or later some one with the moral fibre and guts will step up to the plate and we will come back Stronger, leaner and meaner.
You can count on the fact we won’t run away, lie down or Give up. . . . . So Gerry have no fear and tell your friends and the news the UK will still be here long after the EU has broken up.!

Now back to making chips.!! . .

[Boyan Silyavski]

PS. Without air drier =Mission Impossible. DIY one from water filter vase filled with reusable silica




PS2. Even if you are tempted to use cans, dont do it. You will never even get close to the desired result, whatever sb would advise you. There is no free lunch.