Hehe, that was an idea. But I think tiled countertops are awfully ugly 
I talked to the rental building anyway and the concrete grinder seems to be the right tool. A diamond blade that grinds/polishes. I'll have to rent one and see how it goes.
I talked to the rental building anyway and the concrete grinder seems to be the right tool. A diamond blade that grinds/polishes. I'll have to rent one and see how it goes.
And where can I buy these papers? I've searched a bit at bauhaus, silvan, classe, biltema...
Here is a thread about diamond grinding and surface treatment of concrete floors. Maybe interesting for you Gunne:
http://www.byggahus.se/forum/showthread.php?t=28889/9
http://www.byggahus.se/forum/showthread.php?t=28889/9
This:
http://scaptocs.bosch-pt.com/boptoc...ision=zub&language=sv-SE&ccat_id=8063
I want to get hold of it but it seems impossible to find anywhere. I've checked maybe 7 places. But I'll keep calling...
Edit: I've talked to Bosch and they have the paper in stock, but no retailer has ordered it in the last few months. And the minimum quantity to order is five packages, so it will be really expensive if you have to order... I'll keep looking for another brand.
http://scaptocs.bosch-pt.com/boptoc...ision=zub&language=sv-SE&ccat_id=8063
I want to get hold of it but it seems impossible to find anywhere. I've checked maybe 7 places. But I'll keep calling...
Edit: I've talked to Bosch and they have the paper in stock, but no retailer has ordered it in the last few months. And the minimum quantity to order is five packages, so it will be really expensive if you have to order... I'll keep looking for another brand.
I rented a concrete grinder at the rental house on Lidingövägen. Worked great! Unfortunately, the camera batteries just died so there will be no picture.
One downside of the grinding was that even more pores appeared. I'm considering whether I can treat the slab with some wax instead of oil to somehow fill the holes. In that case, I suppose it has to be a fairly hard wax.
Anyone have any tips? Otherwise, it will be paraffin or linseed oil as people have suggested.
One downside of the grinding was that even more pores appeared. I'm considering whether I can treat the slab with some wax instead of oil to somehow fill the holes. In that case, I suppose it has to be a fairly hard wax.
Anyone have any tips? Otherwise, it will be paraffin or linseed oil as people have suggested.
I searched for countertop and concrete the other day and found a site of someone who makes them to order. I recall it mentioned what kind of oil to use. Regarding filler for the air holes, check the finjabetong website in the PDF with casting tips. It mentioned some repair cement. Exactly how did you make the hole for the sink? I didn't quite understand how you got the rounding so nicely.
Copied from Finja Betong's website http://www.finjabetong.se/aktuell/allmant/tips.htm
"Note! An oil to treat and maintain the worktop with is, for example, Liberon - Finishing oil."
"Note! An oil to treat and maintain the worktop with is, for example, Liberon - Finishing oil."
Porlagning
Take the same concrete you used to pour, but spread it dry on the board and massage the dry concrete into the pores until they are filled, then spray over with water. Then lightly sand by hand with 80 grit wet paper. That should probably do it.
Hand sanders that you rent usually have very high speeds and work well for material removal but not for polishing. Polishing pads can be purchased from FLEX and 3M among others.
I would have treated it with beeswax... or linseed oil, why not test it on a sample piece.
Take the same concrete you used to pour, but spread it dry on the board and massage the dry concrete into the pores until they are filled, then spray over with water. Then lightly sand by hand with 80 grit wet paper. That should probably do it.
Hand sanders that you rent usually have very high speeds and work well for material removal but not for polishing. Polishing pads can be purchased from FLEX and 3M among others.
I would have treated it with beeswax... or linseed oil, why not test it on a sample piece.
So far, I have tested with paraffin oil on a sample piece, but I think I'll probably test the other variants too before I make up my mind. I have a lot of other things to do right now, but in about 2 weeks I should be done with the board so I can show the result...
I am currently in the process of moving into the new kitchen, so the entire counter is cluttered with things.
Due to having to sand the board, the result wasn't what I had planned, but it turned out nice anyway! I treated it with grönlandsvalla (beeswax+paraffin) and it was good. However, one probably shouldn't apply it with an iron as I did because it soothed and stained the board a little brown. A heat gun is probably better...
I'll post some pictures when the kitchen move is over.
Due to having to sand the board, the result wasn't what I had planned, but it turned out nice anyway! I treated it with grönlandsvalla (beeswax+paraffin) and it was good. However, one probably shouldn't apply it with an iron as I did because it soothed and stained the board a little brown. A heat gun is probably better...
I'll post some pictures when the kitchen move is over.
A late tip from me is to: Paint with regular epoxy paint + add flakes to it, then any possible color variations in the underlayer will disappear, and you can, if you want, use filling compounds like leveling compound underneath if desired....