RogerH Posted August 7, 2016 Report Share Posted August 7, 2016 Hi Folks, have you ever tried to glue perspex or acrylic sheet. Unless you have the right stuff it doesn't want to know. At BA i had a half litre tin of Tensol that lasted for years and this worked very well. This is quite expensive on ebay and not really economic. I found that some of the instant glues worked OK but if for some reason you had to break the bond it would not work again unless you machined off a good 0.010" or more. Today I was experimenting and found that paint stripper worked very well. I have StarChem Synstrip and it sticks like sh*t to a blanket (technical term). Roger Quote Link to post Share on other sites
stillp Posted August 7, 2016 Report Share Posted August 7, 2016 I heard this some years ago when we stopped having access to MEK, but the problem was that the paint strippers I tried contained some alcohol. Adhesion was good at first but the acrylic crumbled after a few days. Apparently this was due to solvent-induced stress cracking. Pete Quote Link to post Share on other sites
Don H. Posted August 7, 2016 Report Share Posted August 7, 2016 Methylene chloride has been the traditional solvent for welding polymethylmethacrylate (Perspex or Lucite or Plexiglass -- they're all the same). Exactly what's in some of the solvent-based paint strippers, Roger. Quote Link to post Share on other sites
stillp Posted August 7, 2016 Report Share Posted August 7, 2016 Yes, sorry, methylene chloride is what I was thinking of. Thanks Don. Pete Quote Link to post Share on other sites
Lebro Posted August 7, 2016 Report Share Posted August 7, 2016 http://www.ebay.co.uk/itm/50ml-TENSOL-12-Bottle-ACRYLIC-Perspex-Bonding-Cement-Adhesive-Glue-/160652606560 Bob. Quote Link to post Share on other sites
RogerH Posted August 7, 2016 Author Report Share Posted August 7, 2016 Hi Bob, that looks good. What I spotted a while ago was much more than that. Roger Quote Link to post Share on other sites
ChrisR-4A Posted August 7, 2016 Report Share Posted August 7, 2016 Roger, please tell more, what are you making, for a TR? A bell housing maybe to observe the clutch release operating? Quote Link to post Share on other sites
RogerH Posted August 7, 2016 Author Report Share Posted August 7, 2016 Now that would be a good mod' Roger Quote Link to post Share on other sites
mike ellis Posted August 7, 2016 Report Share Posted August 7, 2016 (edited) In the days when I had easy access to many solvents I always found chloroform to be very good for glueing perspex. Just mix a small amount with some perspex swarf to make an effective glue. Edited August 7, 2016 by mike ellis Quote Link to post Share on other sites
Paul Hogan Posted August 7, 2016 Report Share Posted August 7, 2016 I presume Roger your trying to stick Perspex to Perspex? But if its bonding Perspex to metal then sticofix is an excellent bonding agent. hoges Quote Link to post Share on other sites
Lebro Posted August 8, 2016 Report Share Posted August 8, 2016 In the days when I had easy access to many solvents I always found chloroform to be very good for glueing perspex. Just mix a small amount with some perspex swarf to make an effective glue. I was trying to remember the solvent used for this (but failed) Yes - chloroform works. Bob. Quote Link to post Share on other sites
AlanT Posted August 8, 2016 Report Share Posted August 8, 2016 No problem to get MEK or Methylene Chloride, even in smallish quantities, here in UK. Quote Link to post Share on other sites
PeteT Posted August 8, 2016 Report Share Posted August 8, 2016 From the speed of Rodgers response I think he's been sniffing it (again) Quote Link to post Share on other sites
RogerH Posted August 8, 2016 Author Report Share Posted August 8, 2016 That and Snopak - wow Roger Quote Link to post Share on other sites
Nigel Triumph Posted August 8, 2016 Report Share Posted August 8, 2016 Not sure that using Starchem stripper is a good idea. Though it will dissolve and bond the Perspex in the short term, the strong alkali in the paint stripper may attack/hydrolyse polymethylmethacrylate causing failure over time. An adhesive designed specifically for hard plastics is probably the best bet, try Googling 'Perspex adhesive' and there are plenty of results. Nigel Quote Link to post Share on other sites
RogerH Posted August 8, 2016 Author Report Share Posted August 8, 2016 (edited) Hi Nigel, all the technical problems were in the back of my mind. I was just impressed at how easily it worked. It looks like Tensol 12 would be the best way to go. Roger Edited August 8, 2016 by RogerH Quote Link to post Share on other sites
ed_h Posted August 9, 2016 Report Share Posted August 9, 2016 I've successfully used acetone to join acrylic. Ed Quote Link to post Share on other sites
john.r.davies Posted August 9, 2016 Report Share Posted August 9, 2016 Chloroform? Chloroform!!! A long outdated, and quite toxic (heart stopping) anaesthetic, so take care. Trilene, trichloroethylene, dry cleaning fluid, might be safer and possibly easier to get, if you're not a maven of engineering like Roger. John Quote Link to post Share on other sites
RogerH Posted August 9, 2016 Author Report Share Posted August 9, 2016 Maven - nice word Roger Quote Link to post Share on other sites
JohnG Posted August 9, 2016 Report Share Posted August 9, 2016 Maven - nice word Roger Accurate too, I feel Quote Link to post Share on other sites
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