Mine are welded using a Thermatic process developed originally by an engineer employed by NASA. He, not me, was a very gifted individual and I think over the years has many patents attributed to his work. I feel honored having met him when I was quite young.
James Rustermier. --- In S-Scale@yahoogroups.com, "Bill Lane" <bill@...> wrote: > > Ed was reasonably correct. It is ultrasonic plastic welding. In a galaxy far > far away I used to work at a company that made plotter pens and ink > cartridges. I was the utility set up person. Some of the machines that were > on site were injection molding, pad printing, and ultrasonic plastic > welders. All machines could have made model railroad items! They also had a > small workshop for making fixtures and small repairs etc. That is where I > first used a metal lathe. > > > > Pad printing was a persnickety beast. The ink viscosity changed by the > minute as did the print quality. The pads were a silicone rubber that was > creepy to touch. I also made nylon photo sensitive image plates for short > run items. Most were an expensive hardened steel plate. > > > > The ultrasonic welders rubbed the 2 plastic pieces together so fast the > plastic melted together at the contact points. A typical weld was no more > than 3 seconds - most were 1 to 2 seconds. There was the frequency > adjustment, and a very slight down pressure that pushed the pieces together > as it welded. You had to balance between getting a complete even weld that > held the ink without leaking and not create too much flash or distort the > pieces. It was a piercing high pitched sound when it was a good weld. It was > a very loud uncomfortable sound if something went wrong. > > > > The later SHS couplers were undoubtedly ultrasonic welded together. > > > > Thank You, > Bill Lane > > Modeling the Mighty Pennsy & PRSL in 1957 in S Scale since 1987 > > See my finished models at: > <http://www.lanestrains.com/> http://www.lanestrains.com > Look at what has been made in PRR in S Scale! > > > > See my layout progess at: > > <http://www.lanestrains.com/My_Layout.htm> > http://www.lanestrains.com/My_Layout.htm > > Custom Train Parts Design > <http://www.lanestrains.com/SolidWorks_Modeling.htm> > http://www.lanestrains.com/SolidWorks_Modeling.htm > > PRR Builders Photos Bought, Sold & Traded > (Trading is MUCH preferred) > <http://www.lanestrains.com/PRRphotos.xls> > http://www.lanestrains.com/PRRphotos.xls > > ***Join the PRR T&HS*** > The other members are not ALL like me! > <http://www.prrths.com/> http://www.prrths.com > <http://www.lanestrains.com/PRRTHS_Application.pdf> > http://www.lanestrains.com/PRRTHS_Application.pdf > > Join the Pennsylvania Reading Seashore Lines Historical Society > It's FREE to join! <http://www.prslhs.com/> http://www.prslhs.com > Preserving The Memory Of The PRSL > ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/S-Scale/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/S-Scale/join (Yahoo! ID required) <*> To change settings via email: s-scale-dig...@yahoogroups.com s-scale-fullfeatu...@yahoogroups.com <*> To unsubscribe from this group, send an email to: s-scale-unsubscr...@yahoogroups.com <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
