Finally finished the mugs, 11 so far and I have only managed to damage the paint on one of them which I shall repair, typically it was the red spray that got a scratch through it but once the Rub n Buff arrives I shall try that on it.
Got to thinking about what I wrote about the difficulty in wrapping a resist around a curved object, not just the curve around a cup or glass but a 3 dimensional curve both around and up and down and thought it can't be that difficult and as I have had a request for a glass for one of the lads on my ship I thought I'd give it a go.
I used the curviest glass I could find.
Doesn't look that curved but its enough for me.
I wanted to put lettering all the way around so I scribed a line both above and below at 30mm depth where the lettering will go between.
I then needed the circumference of the glass at both lines.
Then using C=2πr I was able to work out the circumference at both level, I could then have drawn out the curve on paper to make the template but that's what the computers for.
I tried to measure the depth of the curve required and put a square to the glass and measured across but only got a couple of mil measurement so in the end I winged it, it took the second attempt to get the correct curve, I wrapped the first cut and it twisted a bit so tried again.
Once happy I typed in the text using the curved text tool so that it followed the shape of the curve.
Then I sent it to the cutter and weeded.
I double checked it on the glass before sticking then lined it up and very carefully applied it.
Not a bad fit, the first one I tried had a lot of wrinkles in but this one fit great, the gap at the back was caused by not taking into consideration the curve when I measured out, I should have added a few mil.
Once I had this in place I thought I would do a second one a little deeper and shorter on the glass and as its my 22nd wedding anniversary today I thought it would be nice surprise to make one for Lynne.
As an experiment I thought I would make one as if the glass had just the one curve and see how much it went out of shape when applying.
So a bit deeper at 50 mm and 90mm wide.
This did not work at all, I even tried a hair drier but no joy.
The next attempt was the same as the first with a deep curve, although this was total guess work to get enough depth.
I kept the same design and cut.
On a loose try it seemed ok at least better than the first attempt.
I still had a few problems and needed to make a few cuts in areas where the vinyl was starting to bunch but all in all it went around quite well.
I fully masked off and into the cabinet.
I didn't really want any depth just a light etch but still went a little deeper than what I was after.
It was after I blasted that I realised I hadn't put any lovy dovy message on Lynne's glass so back on the computer.
I used the same curve as on the front and stuck this on the back of the glass.
I used the curviest glass I could find.
I wanted to put lettering all the way around so I scribed a line both above and below at 30mm depth where the lettering will go between.
I then needed the circumference of the glass at both lines.
Then using C=2πr I was able to work out the circumference at both level, I could then have drawn out the curve on paper to make the template but that's what the computers for.
Once happy I typed in the text using the curved text tool so that it followed the shape of the curve.
Then I sent it to the cutter and weeded.
I double checked it on the glass before sticking then lined it up and very carefully applied it.
Not a bad fit, the first one I tried had a lot of wrinkles in but this one fit great, the gap at the back was caused by not taking into consideration the curve when I measured out, I should have added a few mil.
Once I had this in place I thought I would do a second one a little deeper and shorter on the glass and as its my 22nd wedding anniversary today I thought it would be nice surprise to make one for Lynne.
As an experiment I thought I would make one as if the glass had just the one curve and see how much it went out of shape when applying.
So a bit deeper at 50 mm and 90mm wide.
This did not work at all, I even tried a hair drier but no joy.
The next attempt was the same as the first with a deep curve, although this was total guess work to get enough depth.
I kept the same design and cut.
On a loose try it seemed ok at least better than the first attempt.
I still had a few problems and needed to make a few cuts in areas where the vinyl was starting to bunch but all in all it went around quite well.
I fully masked off and into the cabinet.
I didn't really want any depth just a light etch but still went a little deeper than what I was after.
It was after I blasted that I realised I hadn't put any lovy dovy message on Lynne's glass so back on the computer.
I used the same curve as on the front and stuck this on the back of the glass.
The end results where quite good, I had been etching and carving for a lot of years and never done anything like this before so making something usable makes quite a change.
Very pleased with results, the rub n buff didn't arrive even though I paid extra for quick delivery, I was going to use the gold buff on the Ross glass, may still do.
Paul
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