Re: Apple cube cleaning
> rom: Paul Koning > WD-40 is a good solvent to use for adhesives stuck to plastic. It's > unlikely to hurt the plastic but it will soften the glue. My go-to solvent for non-ionized glue residues (use water for ionized) on all sorts of materials has been, for many years, mineral spirits (US name; 'white spirit', in the UK): https://en.wikipedia.org/wiki/White_spirit It scores highly on both i) 'doesn't harm underlying material' and ii) 'softens residues' axes. (I've mostly used it on books, to remove stickers, but my experience should transfer to use on computers.) > As always, check on a hidden part of the case to make sure the > particular plastic doesn't object to the stuff you're using. Sage, and important, advice for _any_ removal method. Noel
Re: Apple cube cleaning
On Thu, 18 Nov 2021, Zane Healy via cctalk wrote: On Nov 18, 2021, at 6:37 AM, Mike Katz via cctalk wrote: This is a great question, it applies not just to the Cube, but to any Apple system of that vintage. Plastics preservation is a huge topic, the art museums have alot of experience there, identifying that you have is the first hurdel. The earlier models I got Macintosh plus IIvi lc 475 Quadra 660AV do seems to hold up alot better than the later models 9500/150 7600/120 lc 630 the plastic especialy the typed used inside the cases is brittle like the SGI skins -- Jacob Dahl Pind | telefisk.org | fidonet 2:230/38.8
Re: Apple cube cleaning
On Thu, 18 Nov 2021, Peter Corlett via cctalk wrote: On Thu, Nov 18, 2021 at 03:34:19PM +0100, jacob--- via cctalk wrote: > Brasso, T-Cut, or similar come in useful if you manage to scratch it anyway. Test your technique on some matching scrap plastic first before moving on to the case. You say "polycarbonate" but Wikipedia says "acrylic", and these have quite different mechanical properties so you should verify which plastic the case is actually made from. Maybe the resin code will tell you, but I suspect it'll just say 7 (other). From all I have been dig up on it, its polycarbonat that was used for the outer casing, going on that it seems wd-40 would be a no go. I ended up tested with ethanol on the buttom feets, seing no ill effect after some time, I tested it on the glue and I started to see miscolouring of the papertowle, the glue was comming off. If all else fails, style it out by sticking your own label over it :) :) good advice also if attempts had made it worse Thanks to all for advices -- Jacob Dahl Pind | telefisk.org | fidonet 2:230/38.8
Re: Apple cube cleaning
On Thu, Nov 18, 2021 at 01:09:34PM -0500, Paul Koning via cctalk wrote:
> On Nov 18, 2021, at 11:59 AM, Peter Corlett via cctalk
> wrote:
>> I assume you've already attempted to throw the usual household stuff at it
>> as if it was a phone or TV. If not, dig out the glass cleaner and microfibre
>> cloths and get onto that.
>>
>> In addition to the plausible suggestion elsethread of WD-40, I'd also give
>> it a gentle waft of a hairdryer (or heat gun set suitably-low) to try and
>> melt the glue without melting the plastic, and then it may be more amenable
>> to wiping-off.
... and then you snipped the following paragraph where I pointed out the
case may be acrylic rather than polycarbonate, which is kind of important
given this:
> One other possibility is ethanol. But be sure to test that first, because
> it WILL damage plexiglas ("lucite"). That's about the only plastic it
> hurts, though.
Plexiglas and Lucite are brand names for acrylic.
Re: Apple cube cleaning
> On Nov 18, 2021, at 11:59 AM, Peter Corlett via cctalk
> wrote:
>
> On Thu, Nov 18, 2021 at 03:34:19PM +0100, jacob--- via cctalk wrote:
>> I got a Apple cube here as part of a larger haul, at some point someone
>> placed a bit of tape on the clear polycarbonate case, the tape is long
>> gone but the yellow glue remains.
>
>> Am unsure about the hardness of it, if I could use sugar cubes to rub it
>> off, anyone knows a scratch free way to get it off ?
>
> I assume you've already attempted to throw the usual household stuff at it
> as if it was a phone or TV. If not, dig out the glass cleaner and microfibre
> cloths and get onto that.
>
> In addition to the plausible suggestion elsethread of WD-40, I'd also give
> it a gentle waft of a hairdryer (or heat gun set suitably-low) to try and
> melt the glue without melting the plastic, and then it may be more amenable
> to wiping-off.
One other possibility is ethanol. But be sure to test that first, because it
WILL damage plexiglas ("lucite"). That's about the only plastic it hurts,
though.
paul
Re: Apple cube cleaning
On Thu, Nov 18, 2021 at 03:34:19PM +0100, jacob--- via cctalk wrote: > I got a Apple cube here as part of a larger haul, at some point someone > placed a bit of tape on the clear polycarbonate case, the tape is long > gone but the yellow glue remains. > Am unsure about the hardness of it, if I could use sugar cubes to rub it > off, anyone knows a scratch free way to get it off ? I assume you've already attempted to throw the usual household stuff at it as if it was a phone or TV. If not, dig out the glass cleaner and microfibre cloths and get onto that. In addition to the plausible suggestion elsethread of WD-40, I'd also give it a gentle waft of a hairdryer (or heat gun set suitably-low) to try and melt the glue without melting the plastic, and then it may be more amenable to wiping-off. Brasso, T-Cut, or similar come in useful if you manage to scratch it anyway. Test your technique on some matching scrap plastic first before moving on to the case. You say "polycarbonate" but Wikipedia says "acrylic", and these have quite different mechanical properties so you should verify which plastic the case is actually made from. Maybe the resin code will tell you, but I suspect it'll just say 7 (other). If all else fails, style it out by sticking your own label over it :)
Re: Apple cube cleaning
On Nov 18, 2021, at 6:37 AM, Mike Katz via cctalk wrote: > > Have you tried Goo Gone? I’d be scared to try Goo Gone on a Apple Cube case. IIRC, it’s not exactly normal plastic. As Paul points out, try whatever is used on a spot that will be out of view. This is a great question, it applies not just to the Cube, but to any Apple system of that vintage. Zane
Re: Apple cube cleaning
A chemical engineer friend in the adhesives business told me years ago that WD-40 is a good solvent to use for adhesives stuck to plastic. It's unlikely to hurt the plastic but it will soften the glue. It's not fast but it does work. As always, check on a hidden part of the case to make sure the particular plastic doesn't object to the stuff you're using. paul > On Nov 18, 2021, at 9:37 AM, Mike Katz via cctalk > wrote: > > Have you tried Goo Gone? > > On 11/18/2021 8:34 AM, jacob--- via cctalk wrote: >> >> I got a Apple cube here as part of a larger haul, at some point someone >> placed a bit of tape on the clear polycarbonate case, the tape is long gone >> but the yellow glue remains. >> >> Am unsure about the hardness of it, if I could use sugar cubes to rub it >> off, anyone knows a scratch free way to get it off ? >> >> Regards >> >> -- >> Jacob Dahl Pind | telefisk.org | fidonet 2:230/38.8 >> >
Re: Apple cube cleaning
Have you tried Goo Gone? On 11/18/2021 8:34 AM, jacob--- via cctalk wrote: I got a Apple cube here as part of a larger haul, at some point someone placed a bit of tape on the clear polycarbonate case, the tape is long gone but the yellow glue remains. Am unsure about the hardness of it, if I could use sugar cubes to rub it off, anyone knows a scratch free way to get it off ? Regards -- Jacob Dahl Pind | telefisk.org | fidonet 2:230/38.8
Apple cube cleaning
I got a Apple cube here as part of a larger haul, at some point someone placed a bit of tape on the clear polycarbonate case, the tape is long gone but the yellow glue remains. Am unsure about the hardness of it, if I could use sugar cubes to rub it off, anyone knows a scratch free way to get it off ? Regards -- Jacob Dahl Pind | telefisk.org | fidonet 2:230/38.8
