Another week was spent focused on the compass. Most of the revisions have been focused on the spinner. The rest of the parts have seen some work but they have just been to support spinner changes. The week started by printing a full set from new code.
The models fit together well and changes were easier than working on the old code. Balance was good and the spinner could easily spin on the post.
Printing a groove in the top of the spinner had been tried before it always ended poorly. I tried again and it ended poorly. Making a flat surface that doesn’t touch the print bed or end up as the topmost layer is a recipe for disaster on this 3D printer, and many other filament printers.
Instead of trying to print flat surfaces upside-down the spinner was split into two parts. The bottom part held the magnets and had the keyed hole while the top was simply a cap with the pivot point. By printing them separately and gluing them together it was possible to print at a comfortable angle.
The two-part spinner was put into the enclosure and a brass screw was put in from the top. The screw was adjusted so it would tap on the metal magnets when the spinner pointed the same direction. This would provide the metal-on-metal collision necessary for feeling the direction.
Unnecessary bulk was taken off the spinner model. Rather than a printed cap and printed post the cap was replaced with a piece of brass formed into a cup and the post was replaced with a brass nail. This made for a pivot point with a lot less friction.
The model with brass parts spun very well but the alignment wasn’t as easy so the spinner hung crookedly. Another issue seemed to be that the pivot point had been lowered.
The rest of the weekly summaries have been arranged by date.
First time here?
Completed projects from year 1
Completed projects from year 2
Disclaimer for http://24hourengineer.blogspot.com/
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information in this blog, or linked by this blog, are not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property or similar, is the responsibility of those involved in the replication.
All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.
Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim claim property or assets based on their post.
This blog, including pictures and text, is copyright to Brian McEvoy.
All new models
The models fit together well and changes were easier than working on the old code. Balance was good and the spinner could easily spin on the post.
Assembled and spinning
Printing a groove in the top of the spinner had been tried before it always ended poorly. I tried again and it ended poorly. Making a flat surface that doesn’t touch the print bed or end up as the topmost layer is a recipe for disaster on this 3D printer, and many other filament printers.
Printing problems
Instead of trying to print flat surfaces upside-down the spinner was split into two parts. The bottom part held the magnets and had the keyed hole while the top was simply a cap with the pivot point. By printing them separately and gluing them together it was possible to print at a comfortable angle.
Printing spinner in two parts
The two-part spinner was put into the enclosure and a brass screw was put in from the top. The screw was adjusted so it would tap on the metal magnets when the spinner pointed the same direction. This would provide the metal-on-metal collision necessary for feeling the direction.
Assembled 2-part spinner and feedback screw
Unnecessary bulk was taken off the spinner model. Rather than a printed cap and printed post the cap was replaced with a piece of brass formed into a cup and the post was replaced with a brass nail. This made for a pivot point with a lot less friction.
Slim spinner with brass strip for cap
Escutcheon pins used for a pivot
The model with brass parts spun very well but the alignment wasn’t as easy so the spinner hung crookedly. Another issue seemed to be that the pivot point had been lowered.
Brass strip top which hangs crookedly
The rest of the weekly summaries have been arranged by date.
First time here?
Completed projects from year 1
Completed projects from year 2
Disclaimer for http://24hourengineer.blogspot.com/
This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.
All information in this blog, or linked by this blog, are not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property or similar, is the responsibility of those involved in the replication.
All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.
Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim claim property or assets based on their post.
This blog, including pictures and text, is copyright to Brian McEvoy.
Comments
Post a Comment