[Closed] DIYers - bending painted MDF?

Is painting bended mdf the same as bending painted mdf?

You can buy this stuff pre routed at BnQ. The groove is about 5mm deep and about the same across.

you can do it, but you'll want more than one slit in the back of it. depends how much you need it to bend?

need something more like this...

[img] [/img]

what kind or radius are you trying to bend it round?

^The commercial grooved flexi-mdf it cut almost all the way through^, probably only leaving about 2mm (on a 9mm board) and to grooves are probably about 6 - 8mm apart

Yep, no problem. You can buy it like that, it's known as bendy MDF. For the grooves, thin and lots would be the best. What rad are you trying to achive? 2-3mm wide every 8-12mm around 12mm deep would be a place to start on your test piece. Circular saw might be quicker than a router

that bendy mdf stuff is great.

you might get away with bending it painted if the paint is gloss and fresh and well keyed.

yes B and Q sell this and it worked well

I assume you can do it with anything but if the non routed side is white melamine plasticy stuff I dont know what will happen when you bend it re it cracking but the mdf will be fine

I used mine to surround a corner bath prior to tiling [ plastic tiles] on a boat and worked fine

I ideally want a fairly sharp bend but only 15 degrees or so off straight.

As above I have boards already painted. I'll maybe just have a go and see how it pans out.

Good call re the cirsular saw though I hate using it!

This will end in fail. I can feel it from here.

It will not be AWESOME.

If you want a sharp fold rather than a curve you can route with a v-shaped bit to with a baw-hair of the painted surface. MDF has a sort of tough skin on the factory faces and it'll fold like a hinge. Try it on some spare first though. A wee bend like you're suggesting might not break the paint.

For 15 degrees you won't need many slots (5 maybe?). If you use the saw a guide like this makes it a lot easier and safer:
[img] [/img]

And spend a few quid on a set of ear defenders.

I agree a saw guide like that is good if you're doing a lot of cutting (just come in this minute from using one to build a cabinet) but just using a straight edge as a guide at the offset distance (my Makita has a 110mm offset) is simpler and easier to clamp securely.