Thread: Label casting failure

Not done any of this casting stuff as yet ,but coming. It may be an adverse reaction to the glue on the label that has occured at the edge of the join, These things are pretty finicky from all I have read on the subject . Some one will have a better idea I am sure that has actyally experienced the label casting process, good luck with it , Cheers ~ John

Pete you will find it is the label. I am still working on how to do this, I have done about 4 pens that worked out but have done many others that have done the same thing as yours. I have been sent some new type labels to try this week and I let you know how I go.
David

Ok just turned the label with a gap [no overlap].
No crack but I can definately see the label lifting but only where the two ends meet.
Back to the drawing board.
David please let me know how you go with your labels.

Regards Pete

Will do Pete as soon as the wife get onto her pc she will print them up for me.
David

Ok done a Label with a overlap but this time I rubbed some medium C/A over the overlap.
Surprise!!!! Didnt work lifted again..

Oh well atleast the beer is cold in the shed to mourn our failures.

Pete

i read somewhere something abount rubbing uncatalized ( i think i just made that up) resin on the labels before casting, not sure but could be work a try

MIK

Well had a go today. Just remember it is only to see if the label worked, and yes it did. You can see the over lap. Next time I will put a bit of CA around the tube to stop water getting in. The labels are vinyl from www.decalpaper.com.au
David

The resin probably dissolved the glue on the label, and created a weak boundary which allowed the label to lift away.

If you're printing the labels, try using a paper without glue. From an existing label, you might remove the glue with naphtha (lighter fluid) or mineral spirits. In either case, smear some resin on both sides of the label while embedding. Wear disposable gloves for all of these operations.

Cheers,
Joe

Excellent thanking you, will order some of those decals and will post results.
I will be trying Mik's advice about coating the label with resin without the catalyst.

Regards Pete

Got sent home early today, so I had a quick play in the shed. I had a waterslide label in a mould from Sunday. With this type of label once you print on it you have to spray it then soak in water before putting it on the tube. The label I used was a bit narrow so there was a gap of about 5 mm. The good news is that the sides didn't lift, so this one works as well.
David

I got the decals, tried several and no crack or signs of lifting.
But and there is a bloody But, there seems to be some sort of void in the cast it is hard to explain sort of like a air bubble but basically right up against the label in several spots. Sort of like silver puddles. Its like the resin is lifting from the Label.

Sorry the pictures are a bit out of focus.
Attachment 118911

The line that you see up top is not a crack its just from my mould.
Attachment 118912

Here is my labeling procedure.

1. Print labels. Canon Inkjet. I let labels dry for about 5 Hours.
2. Prepare tubes by light sanding and a wipe over with methylated spirits to remove any grease.
3. Apply label to tubes they sit for about an hour.
4. Place labeled tubes in moulds
5. Mix Clear Casting resin "Barnes" with about 1%-2% Catalyst.
6. Pour into moulds
7. Place Moulds on a vibrating surface to rid of air bubbles.
8.I dont touch them for a good 12hrs.

Is there a dance that I am supposed to be doing or maybe sacrifice a goat or something.
Maybe am I putting in too much catalyst into the resin would that affect it.

I am trying tonight to coat the tubes with resin that has not been catalised before the main resin gets poured in.

Where you have the void was that part facing down in the mold or on the top?
David

No the void as you call it is in numerous spots all around the blank.

And my Moulds are pvc pipes laid vertically.
The funny thing is that when I used labels that ware lifting, I didnt have voids. Go Figure?

Pete

Pete try and spray the label with spray resin let it dry then cast it. Did you try the labels from Decal Paper ?
David