[sdiy] <OT> Job status, plastic repair

[Barry Klein]

Trying all these glues ended up thrashing all the posts to the point construction of new posts was necessary.  I went to Lowes and looked around.  They had more of the jbplastiweld clay but  went over to the sprinkler pipe glue section and found sticks of Oatey Fixitstick.  They are much longer and about $5.  I stuck the screw in what was left of the post and applied this stuff all around the screw to form a threaded post.  The stuff hardened much better and quicker and I think will do the job.  My earlier attempt with the JB must have failed for it being too old.  No numbers on the pieces anywhere.  I had tried a can of the ABS piping cement.  It stuck to the side panels well but the posts were too far gone to hold against screw pressure.  Then I tried the Oatey stuff and it didn't want to stick to the ABS cement at first.

Barry



> On Apr 24, 2015, at 11:39 AM, Tom Arnold <xyzzy at sysabend.org> wrote:
> 
>> On Tue, Apr 21, 2015 at 04:32:02PM -0700, Barry Klein wrote:
>> What do you guys recommend for a plastic glue for these?  I never have had 
>> any luck with plastic glues or epoxies.  None of them actually melt the 
>> plastic and form a bond.
> 
> Is there a plastic ID number stamped anywhere?  Like one of the recycle
> numbers?  That can help.
> 
> If its a long-chain plastic like HDPE and its ilk, they are a real bear to
> glue.  You can try TAP Plastics' Poly-Weld adhesive.  It requires you heat
> the surface first to open up some chemical bonds and then glue it with a
> two-part epoxy looking stuff.  I've used it and managed to glue the
> impossible ( UHMWPE, which is one step from Teflon ) quite nicely but it was
> fiddly.
> 
> The glue from TAP plastics is far better then model glue which has been made
> Kid-Safe over the years.  The Acrylic glue they sell in the red squeeze tube
> in particular works well with ABS, and will turn a Testor model into a
> Horrow Show creature in about 2 seconds.  models tend to be made from a soft
> easily chemically meltable plastic...
> 
> Its kinda a crap-shoot figuring out which glue will work without knowing which 
> plastic they used, but I bet its either an ABS family or a polyethylene
> family. 
> 
> Maybe Alesis would know what plastic they used?  Its a long shot but with
> that information you can target the proper glue.
> 
> -- 
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