Go to Post Q: "What does your robot do?" A: "It collects data about the surrounding environment, then discards it and drives into walls" - tsaksa [more]
Home
Go Back   Chief Delphi > Technical > Technical Discussion
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
 
 
Thread Tools Rate Thread Display Modes
Prev Previous Post   Next Post Next
  #10   Spotlight this post!  
Unread 24-06-2004, 14:11
patrickrd's Avatar
patrickrd patrickrd is offline
Registered User
AKA: Patrick Dingle
no team
Team Role: Engineer
 
Join Date: May 2001
Rookie Year: 1999
Location: Medford, MA
Posts: 349
patrickrd is a splendid one to beholdpatrickrd is a splendid one to beholdpatrickrd is a splendid one to beholdpatrickrd is a splendid one to beholdpatrickrd is a splendid one to beholdpatrickrd is a splendid one to beholdpatrickrd is a splendid one to behold
Send a message via AIM to patrickrd
Re: Tapping broken taps (a.k.a. I'm all tapped out)




I tried your method and failed! But perhaps I got something wrong...

I first broke a standard 4-40 tap in a 0.092" aluminum hole (actually one of my teammates did).

Then I was excited to finally have the opportunity to use alum and dissolve the tap. Since the part was quite small, I filled up a pepsi can (with the top cut off) with boiling water, and added in about a teaspoon or tablespoon of alum. I then mixed it up, threw in the part, and waited. When I came in today (after a full night of the alum doing its thing), I couldn't get the tap out, and it still seems to be the same as it was.

So, I'm thinking of two possible errors:
1) I didn't put in enough alum (what are the correct proportions of alum to water?)
2) The water quickly cooled to room temperature... Maybe I should keep it boiling like the instructions say.

Any input would be appreciated!! Thanks!
__________________
Systems Engineer - Kiva Systems, Woburn MA
Alumni, Former Mechanical Team Leader - Cornell University Robocup - 1999, 2000, 2002, 2003 World Champions
Founder - Team 639 - Ithaca High School / Cornell University
Alumni - Team 190 - Mass Academy / WPI
 


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 02:56.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi