Homebrew PCBs

There are two issues here.
First is the folks who want to change the speed of the rollers to slow 
it down to do
just one pass.
The laminators that have two sizes of gears can have them swapped to 
have the bigger where the smaller
was and it will slow down.
BUT
if your laminator does not reach 340 degrees then swapping gears does 
not get you anywhere.

Issue two is US melting nylon plastic gears when we raise the 290 degree 
standard photo pouch
laminators to 340 degrees... and higher 370 degrees to match toner melt 
temperatures.

FROM WIKI:
  The 428 �F (220 �C) melting point of nylon 6 is lower than the 509 �F 
(265 �C) melting point of nylon 66.

SO
here lies our problem.
Cheap gear motors pushing cheap gears are fine in a laminator that is 
supposed to never reach
300 degrees.
And then
we cook them up with a laminator hack
and
if we go a little too far.... melt our gears:

http://www.learnmorsecode.com/laminator/royalmods9.jpg

and nobody has been able to identify the correct metal gears to replace 
some of our gears.

So look into making them:

http://www.learnmorsecode.com/laminator/gearteeth.gif


On 12/25/2016 10:35 PM, me@... [Homebrew_PCBs] wrote:
>
> What is the advantage to swapping out gears?   I have been using a GBC 
> Heatseal H212 for a number of years now with no issues.   The only 
> modification I made was to remove some guides to allow the PCB to pass 
> through.
>
> 
> ------------------------------------------------------------------------
>