chuck-h / ose-cebpress-hopper Goto Github PK

I have been mindlessly checking in all my work in progress to master branch.

Intended policy is to keep drawings in edge branch until validated and approved, then move to master branch. That way master branch should be trustworthy for use by fabricators.

according to this
http://www.cnczone.com/forums/alibre_design/157372-alibre_dxf.html#post1198395

I need to make a drawing at 1:1 scale for export. The human-readable drawing is at smaller scale.

Several questions on index 166 cylinder cover

1. are index 166 & 167 identical?
2. does the "weld 3/4" washer on" note belong on drawing?
3. need a drawing number

Increase hole dia to 1" as on other hopper parts. All are clearance holes for 3/4" bolts or plug welds.

KS> I got the .dxf files for the Hopper but when I open them in LibreCAD, I see nothing
KS> (screenshot attached). Marcin ran into the same problem. We tried zooming in/out
KS> - no effect. Are we doing something different from what we're supposed to?

MJ> Let's make those holes 1". We want to use 3/4" bolts for robustness. Way
MJ> overkill but it is lifetime design, and it reduces unique part counts.

I can dimension them 1" +0.00/-0.25 - that will still match the markup (3/4"-1") but the tool path will be on 1 inch dia.

MJ> Got it. How do we annotate more clearly - some users won't be able to find
MJ> this. Can you put some notes about which folders to go to on Github?

I am not in position to do much more this morning but I can copy this
text to README.md later today (do you think people can find that file
easily enough?):
This project directory is organized hierarchically. There is a
subdirectory for each part, using a name that include their index
number in the master index. For example, i88-rear-plate is for index
number 88
Within each part directory there is a subdirectory for the master
CAD files (the preferred format for editing updates into the design),
identified by the CAD tool used, for example master-alibre. Usually
you will need have a specific CAD program installed on your computer
in order to make use of these files.
Also within the part directory there is an 'exports' subdirectory.
These are outputs from the CAD program intended for (1) human viewing,
and/or (2) passing to later stages of the manufacturing toolchain. For
example, you can expect to find a pdf working drawing here.
Finally, the 'reference' subdirectory is a catch-all for information
that is not a direct part of the toolchain.
There are two active branches. The 'master' branch is intended for
finished documentation. The 'edge' branch is for revisions in progress
and should not, in general, be used for fabrication.