Hawkeye Plume Wing - has no stop for flat against side of tech, wing edge pointing up or down. (I'd add a picture, but heh...) Hawkeye Flat Brackets - have several orientations locked out (as shown in video). An old report from January, by @Sylver. Venture Double Block - Can not be rotated flat 180 so that slanted grove on the side angles down towards the back of the tech. Crafting Blocks - the GSO & Venture refineries, all 4 fabricators, GSO scrapper, GeoCorp and GSO (anchored and unanchored) furnace generators and Delivery canons are all locked to the horizontal orientation. Unlike the newer refineries, auto-miner, other 3 scrappers and GSO component factory (which seems to have an endless precession of unhelpfully random orientations). The argument with these is that this limitation is to ensure things are fairly simple and slick for newbies building their first crafting bases (tricky enough as it is). From this reply by @saiwun, last year: But maybe it could be time to unlock these. Instead, make all the crafting blocks re-orient in a more understandable, logical sequence: all horizontal ones first, then all the ones in another plane, etc. (Maybe also have a new key to reset the orientation to default - thinking of the factories...). Obviously the delivery canons should have to point upwards to word (as the auto-miners), but if the next one is being 'fixed', then locking any blocks to the tech's initial orientation wouldn't make much sense. Edit 2017-11-10: Made an info-graphic of all the crafting block orientation possibilities for my Crafting Guide: Primary cabs - have no re-orientation allowance at all. Acknowledged as a bug: However, this does help to stop (new) players creating a mismatch between the tech's current orientation and and the grid's native co-ordinate system (which is sometimes used by the game, spuriously). Solar Panels - no rotation around long axis. More? - These are hard to notice (until you do), so let me know of ones I've missed and link me to any outstanding bug reports. Cheers.