Primer + Varnish Help

[sarah_4_jamey]

Can i put MDF primer on to the boards after them beeing sanded, let it try and then put yatch varnish on top of it?

 

[and1c]

Can i put MDF primer on to the boards after them beeing sanded, let it try and then put yatch varnish on top of it?

Erm.
Well you can...but mdf isnt known for its outdoors hardiness.
Why do you need to use it??
more than 3 words would be useful

 

[Jasonb]

For your use you can put the varnish straight onto the MDF, Dilute the first coat with 10-20% white spirit. Rub down between coats with something in the region of 240grit abrasive particularly afyer the first coat which will raise the "grain" more so on any cut edges.

You may find a waterbased finish easier, something like Dulux diamondglaze, this will seal it sufficently and if you do as I said elsewhere use exterior or at a minimum moisture resistant MDF that will help.

Jason

 

[and1c]

For your use you can put the varnish straight onto the MDF, Dilute the first coat with 10-20% white spirit. Rub down between coats with something in the region of 240grit abrasive particularly afyer the first coat which will raise the "grain" more so on any cut edges.

You may find a waterbased finish easier, something like Dulux diamondglaze, this will seal it sufficently and if you do as I said elsewhere use exterior or at a minimum moisture resistant MDF that will help.

Jason

Good point.
I was assuming this wasnt exterior MDF

 

[sarah_4_jamey]

Its for indoor use, i just want to make a viv out of it might get a few splashes of water thats all but would be hunid in their.