There are
13 more photos of this Part
This variation (3040b) may have long or short (reduced) inside cross support - refer to the photo below.

Design ID 6270 is used for transparent colors.
Available Colors
Toggle Available ColorsClick on a colored part below to see the Sets and MOCs that use part 3040b Slope 45° 2 x 1 with Bottom Pin in that color. You can find an overview of all LEGO Colors here.
If a color is missing, it probably needs to be added to a Set Inventory.
This part has been used by MOCs in the following colors but not officially released.
There are 3 Mold variations of part 3040b - Slope 45° 2 x 1 with Bottom Pin in the database, in use between 1978 to 2019. See Molds and other related Parts.
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Molds:
x2
Prints:
x12
15 COMMENTS
I just come across these things as I input large bags of parts. I'll continue to tag if you feel it's helpful!
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Edit: The new direction is to keep all molds separate and the v2 functionality will handle it!
So I think you should display 3040a sets under 3040a instead of 0 sets. and 3040b as all new sets not containing 3040a. while 3040 is all sets containing either 3040a or 3040b. The part might be old so most people have only part 3040b, I have alot of both.
And you can start making your interchangable part rebrickable work. like the color, exactly,(use extensions) or close (ignore extension except for patterns), Ignore (ignore extension including patterns)
Some part mapping has to be done thought for it to work 100%.
it's one thing I think it's bad about rebrickable to treat old pieces as if they where second class bricks. That most of them end up in "other" catagory without images. Okay i can understand the images, you have to work from one end and focusing on new parts make sense.
I also think you need more categories. my inventory is getting unweilding already and I have alot of inventory to add.
Wouldn't more categoreis help from the slow down.(like slopes and the sub brick categories bricklink has)I also have notice that if you completely reload the "parts" page it recover speed while every time you use the "update button" or modify your current part without going up in the adress field to force a fresh reload it slow down bit by bit until it's not even possible to scroll anymore. With that information you should beable to figure out a counter measure.
oh and this site could use a forum.