Page 1 of 2 12 LastLast
  1. #1
    Hi,
    I am wanting to make a silicon mould of a piece I will be milling (so that i can reproduce it)therefore the aesthetics of the original aren't important- when i've done this before with pieces that are 2d (or comprised mainly of 2d parts) i've used plywood with a little beech for any small 3d bits. As i'm sure everyone here knows, solid timber can be quite costly, just wondering if anyone has any alternative, cheaper suggestions that can hold 3d designs to a depth of about 14mm.
    Thanks in advance,
    Mark

  2. #2
    Some form of hard foam? Would this work?

  3. #3
    Machine wax, here's one supplier, there are others, http://trycut.co.uk/
    It's quite expensive but there's no waste as it just remelts back to a block.
    So after the initial cost each part made is essentially free
    Last edited by EddyCurrent; 15-11-2017 at 02:57 PM.
    Spelling mistakes are not intentional, I only seem to see them some time after I've posted

  4. #4
    Quote Originally Posted by EddyCurrent View Post
    Machine wax, here's one supplier, there are others, http://trycut.co.uk/
    It's quite expensive but there's no waste as it just remelts back to a block.
    Nice find. Might look at this too for 'stuff'.

  5. #5
    There are some recipes on line for home-brewed machinable wax, one involves Paraffin Wax, old carrier bags and an old deep fat fryer, must try it some time :D
    You think that's too expensive? You're not a Model Engineer are you? :D

  6. #6
    Was snooping around looking at the waxes and came across this.

    http://www.collegeengineering.co.uk/...ials/testfoam/

  7. #7
    I think these waxes and foams are a great idea to test out tool paths on a complex piece before risking it on the real thing. They are not cheap though...

  8. #8
    Quote Originally Posted by EddyCurrent View Post
    Machine wax, here's one supplier, there are others, http://trycut.co.uk/
    It's quite expensive but there's no waste as it just remelts back to a block.
    So after the initial cost each part made is essentially free
    That's very interesting, any thoughts on the spindle speed and feed, I have visions of melted wax everywhere!

  9. #9
    Quote Originally Posted by mark84 View Post
    That's very interesting, any thoughts on the spindle speed and feed, I have visions of melted wax everywhere!
    Id guess its similar to alu but its only a guess. Perhaps ask the vendor and let us know your finding please. Also interested in this.

  10. #10
    Whatever it takes to keep friction down and without deformation of the wax, a relatively slow spindle speed but a relatively high feed rate. ("relatively" meaning, I don't know an exact number for certain )
    Last edited by EddyCurrent; 16-11-2017 at 10:30 AM.
    Spelling mistakes are not intentional, I only seem to see them some time after I've posted

Page 1 of 2 12 LastLast

Similar Threads

  1. BUILD LOG: 1st Build - Woodshop CNC Router to handle 1220x606mm sheet materials
    By glynster in forum DIY Router Build Logs
    Replies: 7
    Last Post: 09-04-2015, 12:33 PM
  2. Milling Sheet Aluminium
    By p1lts in forum Metalwork Discussion
    Replies: 8
    Last Post: 07-03-2014, 11:23 PM
  3. Cheapest CNC steppers I've ever seen!
    By D.C. in forum Marketplace Discussion
    Replies: 5
    Last Post: 02-02-2013, 10:22 AM
  4. Cheapest suppliers of Alu?
    By Shinobiwan in forum Marketplace Discussion
    Replies: 10
    Last Post: 02-01-2013, 07:34 PM
  5. Best / Cheapest place to buy 2.2kw spindle & vfd
    By Mad Professor in forum Marketplace Discussion
    Replies: 1
    Last Post: 28-08-2012, 08:45 PM

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
  •