6. Frame
General idea
(A Tank v1 is shown but the same concept applies to the v2.)
The general idea is to assemble a loosely connected frame first and allow it to shake like a skeleton as shown in the 1st video. Place the whole frame on a solid and flat surface such as a large tile or a granite table, gradually fasten bolts in each corner and you'll get a sturdy frame as shown in the 2nd video.
Wrong: fasten individual nuts to 100% one after another
Fasten nut A to 100% --> nut B to 100% --> nut C to 100%
Correct: fasten nuts gradually in stages
Fasten ALL nuts to 50% --> ALL nuts to 75% --> ALL nuts to 100%.
Frame pieces
304 stainless steel frame pieces
Vinyl wrap films (optional)
Actions
Peel the blue protection film off, clean the glue residual with adhesive remover or soap water.
(Optional) Tailor and paste your favorite vinyl wrap films. To remain rigidity, it's suggested to paste only the external side and cut the films off where the frame pieces overlap. You might even want to remove the films where the bolt heads are.
An example of vinyl wrapped Tank
The frame
304 stainless steel frame pieces
Round-head bolts M5 x 10
Flanged nuts M5
Printed DAB fork for adjustment (optional, if you order the DAB extruder carriage. STL here)
Loctite® Threadlocker Blue 242® (optional)
Actions
The general idea is to assemble a loosely connected frame skeleton first, and then fasten all nuts in stages.
When putting frame pieces together, you can flip it up-side-down to access the bolts and nuts more easily.
When fastening the nuts, turn the frame upright and place it on a solid and flat surface such as a large tile or a granite table. Fasten nuts in each corner in stages.
When fastening the frame, hold the bolts steady and turn the nuts as the nuts won't be stripped that easily.
Exams
Make sure the frame is placed on a flat surface when you fasten the nuts.
(optional) The single temporary M5 x 10 bolt for DAB fork is fastened.
For the frame skeleton, place all bolt head outside.
Y bridges
Y bridges ↔ frame
Aluminum Y bridge (2)
Round-head bolts M5x30 (4)
Flanged nuts M5 (4)
Actions
Attach the two Y bridges in the orientations as shown in the pictures. Note that the bolt heads of the right Y bridge should be at the inner side to prevent interference with one of the CoreXY belts.
Exams
Holes for the linear rail should be closer to the inner side of the frame.
No need to fasten the nuts. You'll have to adjust and find a flat XY plane later.
ACM panels
Two big ACM panels ↔ frame
Round-head bolts M5 x 10
Flanged nuts M5
Two small ACM pieces ↔ frame
Bolt m3 x 10 (4)
Nut m3 (4)
Washer 3 x 8 x 0.8 (4)
Actions
Peel the protection film on the ACM panels. Attach the panels with the black side facing the inner side of the frame.
Attach the bottom ACM panel BEFORE the components for Z axis in chapter 7.
Exams
You don't need high torque to the nuts on the ACM panels.
