Page 2 of 2 FirstFirst 12
Results 36 to 40 of 40
Like Tree11Likes

Thread: Chassis Design

  1. #36
    Old Timer
    Join Date
    Jun 2007
    Location
    Pensacola, FL
    Posts
    3,391
    This thread is great! JM you have impressive skills, and determination.
    Justin Thomas likes this.

  2. #37
    Old Timer
    Join Date
    Jun 2007
    Location
    Pensacola, FL
    Posts
    3,391
    JM how do you go about cutting a hole for an IEC receptacle?

    https://vetco.net/spree/products/619...02.?1464810608

  3. #38
    Old Timer J M Fahey's Avatar
    Join Date
    Oct 2007
    Location
    Buenos Aires, Argentina
    Posts
    9,349
    Your link looks like a virus, at least it´s a hidden executable, so I left it there.

    In any case; I *would* have ordered the proper die set (for a mechanical press, not a Greenlee type one) but it´s too large to fit in my small punchers, so I cheat by punching my trusty rocker switch holes 3 times, one at each end, and the third cutting the narrow leftover column in the middle,I end up with a proper sized rectangular hole .
    Does not look perfect, buy typical IEC all around rim covers it so no big deal.
    Sadly, such punching must usually be made on flat sheet before final bending and assembly, not possible on a finished chassis ... unless you can pull a few screws and remove just the flat front or back panel.
    lowell likes this.
    Juan Manuel Fahey

  4. #39
    Old Timer
    Join Date
    Jun 2007
    Location
    Pensacola, FL
    Posts
    3,391
    It was a link to an image. All good though.

    Its an IEC receptacle for those AC mains plugs. Like most desktop computers have. I've been drilling a circular hole and then using nibblers to do the rest. Works, but is more time consuming with a not so elegant result. But I guess these things really boil down to practice.

  5. #40
    Senior Member SoulFetish's Avatar
    Join Date
    Jan 2016
    Location
    Massachusetts
    Posts
    451
    Quote Originally Posted by lowell View Post
    It was a link to an image. All good though.

    Its an IEC receptacle for those AC mains plugs. Like most desktop computers have. I've been drilling a circular hole and then using nibblers to do the rest. Works, but is more time consuming with a not so elegant result. But I guess these things really boil down to practice.
    Here is how I make quick and easy work of creating an IEC hole using a drill and file:

    • I mark and make drill 3 pilot holes to line up the center of mounting hole with the two mounting screws. Then, I drill 3 more pilot holes on each corner so I can remove as much material with the drill as possible around the edge of the hole.
    iec-pilot-drill-holes.jpg

    • Then I just use a drill bit sized to give me a comfortable radius for the corners and drill out each pilot hole. To remove the bulk of the area left towards the center, I use a step drill with a diameter large enough to get me reasonably close to the width of the mounting hole.
    iec_drilled_before_filing.jpg

    • With the bulk of the material removed, I quickly file the rest of the material away to shape the desired dimensions (this part maybe took a little more than a minute or so).
    iec-after-quick-filing.jpg

    I was really happy with the quality of the results and a huge plus was how quick and easiy it was to do. It took me longer to type out this post than it did to fabricate the IEC mounting hole on my chassis. Here is the result–
    iec-fitting-front.jpg

    iec-fitting-back.jpg

    of course, even quicker and easier would be to use an appropriately sized rectangular punch. Often these are quite expensive, but
    dchang0 came through huge and found this punch for us!
    | 31.4 x 28.3mm Hand Rectangular Punch and Die Tool |
    If I have a 50% chance of guessing the right answer, I guess wrong 80% of the time.

Page 2 of 2 FirstFirst 12

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Chassis Design
    By Wilder Amplification in forum Theory & Design
    Replies: 18
    Last Post: 04-07-2011, 12:08 AM
  2. Is there anything wrong with my design?
    By newbambeeno in forum Theory & Design
    Replies: 1
    Last Post: 02-24-2010, 07:00 PM
  3. Chassis Alterations
    By chunkitup in forum Conversion Projects
    Replies: 8
    Last Post: 02-15-2010, 03:04 PM
  4. Chassis? Cheap chassis?
    By Satamax in forum Guitar Amps
    Replies: 17
    Last Post: 07-20-2009, 09:29 AM
  5. design help
    By mbailey in forum Theory & Design
    Replies: 4
    Last Post: 01-13-2009, 07:53 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •