Free 186 More Best Homemade Tools eBook:  
New: 300+ fresh build posts/day from 275 forums → BuildThreads.com

User Tag List

Results 1 to 4 of 4

Thread: Tunnel boring - GIF

  1. Aug 19, 2025, 08:27 PM #1
    ToolTalkBot
    ToolTalkBot is offline
    Supporting Member
    Join Date
    May 2024
    Posts
    6,111
    Thanks
    0
    Thanked 11,159 Times in 4,764 Posts
    Awards Showcase
    5,000 Posts Supporting Member
    Total Awards: 2

    Tunnel boring - GIF

    Tunnel boring.




    Previously:

    1952 subway tunnel cleaning machine - photo
    Constructing a tunnel under a highway - GIF
    Drilling a tunnel with a hole saw - GIF
    How tunnels are dug - GIF
    Japanese maple tunnel - GIF
    New: BuildThreads.com - 300+ build posts/day (with photos)
    Reply With Quote Reply With Quote

  2. The Following 3 Users Say Thank You to ToolTalkBot For This Useful Post:

    emu roo (Aug 21, 2025), nova_robotics (Aug 21, 2025), Ralphxyz (Aug 27, 2025)
  3. Aug 20, 2025, 09:50 AM #2
    BuffaloJohn
    BuffaloJohn is offline
    Supporting Member BuffaloJohn's Avatar
    Join Date
    Aug 2019
    Location
    Oregon, USA
    Posts
    1,310
    Thanks
    502
    Thanked 783 Times in 464 Posts

    BuffaloJohn's Tools
    Awards Showcase
    Tool Tip of the Month Winner 1,000 Posts Homemade Tool of the Week Winner Supporting Member
    Total Awards: 4
    You don't get a sense of scale on this, what is the diameter?
    Reply With Quote Reply With Quote

  4. The Following User Says Thank You to BuffaloJohn For This Useful Post:

    emu roo (Aug 21, 2025)
  5. Aug 21, 2025, 10:15 PM #3
    sossol
    sossol is offline
    Supporting Member sossol's Avatar
    Join Date
    Oct 2012
    Location
    Lafayette, Indiana
    Posts
    671
    Thanks
    900
    Thanked 538 Times in 295 Posts

    sossol's Tools
    Awards Showcase
    Supporting Member 100 Posts Homemade Tool of the Week Winner
    Total Awards: 3
    TBMs breaking through is surprisingly underwhelming given how amazing the technology is. It's not there, a bit of rock crumbles, then there's a giant drill in a perfectly-round hole. It's still cool to watch and to hear.

    Neil
    Reply With Quote Reply With Quote
  6. Aug 21, 2025, 10:40 PM #4
    Frank S
    Frank S is online now Frank S has agreed the Seller's Terms of Service
    Supporting Member Frank S's Avatar
    Join Date
    Aug 2015
    Location
    Peacock TX
    Posts
    12,617
    Thanks
    2,677
    Thanked 11,107 Times in 5,389 Posts

    Frank S's Tools
    Awards Showcase
    Homemade Tool of the Month Winner Tool Tip of the Month Winner 10,000 Posts 10-Time Homemade Tool of the Week Winner 100-Time Best Discussion Winner #1 Tool Builder 5-Time Homemade Tool of the Week Winner Supporting Member 50-Time Best Discussion Winner 25-Time Best Discussion Winner Top 10 Tool Builder 10-Time Best Discussion Winner
    Total Awards: 14
    Judging by the small number of cutters wheels This TBM is probably boring either a tunnel for water or sewer or a service tunnel for conduit and air circulation between a pair of much larger tunnels. so probably as small as 9 feet to as large as 12 feet.



    2,500+ Tool Plans
    Never try to tell me it can't be done
    When I have to paint I use KBS products
    Reply With Quote Reply With Quote
« Drainage pipe installation - GIF | Lifting large curtain wall glass in place - GIF »

Thread Information

Users Browsing this Thread

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

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
  •  

Forum Rules