How can I easily remove a jumper plate?
I find it very difficult to remove this kind of brick with a brick separator.
A 1x1x5 brick has enough leverage to remove most jumper plates. Apply pressure to the top of the brick and pull or push away from the length of the jumper plate.
Even a 1x1 brick works in certain cramped places, although It doesn't provide as much leverage.
I'll try to show how I'd do this using a 2x12 plate (or something similar). Imagine you're looking at it from the side:
_n_n_n_n_n_n_n_n_n_n_n_n_ --> Pull | narrow, long plate _n_ | jumper plate _n_n_n_n_n_n_ | baseplate
n = stud
Just attach a plate or brick to the top of the jumper and push it to the side so it will tip over.
PS: i hope the ascii-art makes clear what i tried to explain - i don't have a lego-designer here at work
Use the new Jumper Tile 2.0 instead! Easier to remove! Comes in many1 colors2! Advanced features3! Comes in many colours4! Lighter than the old, clumsy version!
Don't wait, contact your closest LEGO reseller to upgrade your collection of obsolete jumpers to new, shiny ones!
2. U.S. version only.
3. The same as Jumper 1.0, plus Easier removal
4. U.K. version only.
Seriously though, LEGO just added a groove on jumpers, see the difference:
Which admittedly doesn't help you right now, but at least you can take comfort in knowing LEGO adressed the issue somehow.
Use the new brick separator:
...when it becomes available.
Place a regular 1x2 plate on top of it (the hollow stud of the jumper plate fits around the post in the bottom of the 1x2), and apply lateral force to the combination. They should come off together. Then rotate the two to separate them from each other.
There are a few parts that can be used in place of a brick separator
This won't help with jumper plates in the middle of baseplates, but can be useful in other situations.