9/13/2026 - 5th Update!

it’s 9:44 PM, im back! hope you didnt think i was gonna miss today :p

ok, so the reason why i cant really start working, and im really stumped, is that fermion’s more of a packaging problem. for spark, the whole thing was easily tunable (as in, heights were changed a BUNCH during the end, which being parametric really helped out), but fermion has to “work”, of course not first try, but the order we do things really does make stuff work out or be super painful later on

i think im not gonna use linear rails again (what!) because, well, i really dont enjoy having to import random parts from outside, and working around them is a real nuisance (along with the fact they are really pricey sometimes, given that we would need like 3 for the corexy and 4 for the scissor lift)

hmm it might be best for me to start with front facing points instead of side heights, basically a front facing profile first, well, let’s go then!

(instead of locking in, the narrator went straight to catching up on messages and quite some time has passed (10:01 PM and now its 10:14 PM))

so uh, the whole things gotta be mirrored right

quick check that t nuts for 1010

sorry had to quickly get rid of an insect, anyways, why are 1010 extrusions intrepreted in inches???

im gonna implode (onshape doesnt have 1010 profiles)

good news is that 10x10mm extrusions do exist on amazon, except theres no standard for them

shoutout to this thing on amazon, first place with actual decent drawings for this

ok, good news, the profile is now in onshape, most details are in, just except for the fillets (the listing thing doesnt provide that information, and onshape doesnt want it to exist). however, this is probably for the best for performance (cope)

ok, for the sake of clarity, let’s name the parts:

• central: the part that remains stationary to the ground, so the electronics and the build plate
  • build plate: the build plate, which sits above the electronics
• z scissor lift: the part that makes the z move, but NOT the subject itself (basically, the scissor mechanism)
• upper platform: the subject that gets moved, so the corexy and tool bay
  • tool/docking bay: the docking bay for the tools

shouldnt be that hard? yeah, fairly straightforward. anyways, thats the standard i guess im gonna use for the cad

woo 3mm gt2 belts actually exist! found some here on aliexpress

anyways, for this corexy setup (no, we arent cadding it yet, im working on side heights right now), we’re NOT gonna be fitting the belts inside/between the rods (did i mention that already? i think i did, we’re using rods), but instead we’ll make them side by side, one second

a little doodling later, here’s what i mean!

ok, so here’s the order we should mastersketch in, since ive been twirling around the cad for like a good couple minutes now

• base and side heights (obviously)
• z lift (what!) (since this is super influential in the amount of space we get)
• corexy (upper layer stuff) (needed before tool stuff)
  • motor positions! (this influences docking area spaces)
• tool base and docking area
• compact
• main electronics area

so uh, how does one even have a scissor lift with a screw in the middle? i forgot to press record.

well, yeah, its been a bit, i took a bit of a break, it’s 12:38 AM, i think im gonna stop here for today!

of course, there’s still lots to do, but yeah, seems like a good place to stop for today! it’s 12:39 AM, and yeah, good night!