A while ago I made a set of Christchurch bus map coasters and someone asked for a tutorial.
Start with a set of old coasters you don’t want.
Give them a sand down with some rough sandpaper (mine is around 100 – sound official??)
Select your print, fabric, map….. I drew around mine so I could get a sense of exactly what they would look like – with pencil so I could move it. Cut them out and check they sit nicely on the coaster.
Apply a good coat of PVA – you can water this down a bit.
Smooth the print on – I use a ruler to get rid of air bubbles.
Let it dry completely.
Now I used polyurethane (varnish) some people have asked me if I used modge podge, which I have heard of but never used. Warning this stuff seems very expensive to me so you might want to have a rummage in the garage or decide if you want to work with a friend.
I do 2 coats of water based clear varnish. Let it dry thoroughly between coats.
Then 1-2 coats of enamel based varnish for the really glassy finish. Again patience and commitment between coats is going to give you a better finish. Also you should probably do at least the enamel based outside or in the garage, it’s pretty stinky.
I’d love to know if you do some and see your work too. If you want to share this tutorial please link back here. Thanks