Error in frame x-axis installation?

[objects.reprap.org]

'Installation of X-Axis'

This step calls for M4x12 bolt, qty 6. However there's no M4x12 bolt called out in the master BoM on the Mendel Assembly Data Sheet

[objects.reprap.org]

so there is an error somewhere - either in the BoM or on the assembly instructions. Can anyone confirm the correct screws to use on this step?

Thanks !

---

----------

whispers of a clanking replicator... [www.incunabulator.com]

crud, I have no idea. I bought what was listed in the BoM and managed to assemble my Mendel without trouble so I'd say go by the BoM. Still can someone with a Mendel on hand verify if that is supposed to be an M4x40 and update the wiki?

Looking through it, I think you can use M4-16 Cap instead. If you take all the M4-12 Cap screws and M4-16 Cap screws and add them up it's suspiciously around the right number of M4-16's in the spreadsheet.

Note: I noticed the extruder mentions a single M4-16 Cap screw and in the spreadsheet it mentions it's M4-20 Cap screw.

Guess: To reduce the different types of part (and therefore reduce the cost), someone has changed pieces. This change may not necessarily have made it into the wiki build instructions.