Half/Split columns using two 2x4s

Topics related to wrapped rotary machining in Aspire or VCarve Pro
Post Reply
User avatar
Rcnewcomb
Vectric Wizard
Posts: 3884
Joined: Fri Nov 04, 2005 5:54 am
Model of CNC Machine: GCnC/WinCNC
Location: San Jose, California, USA
Contact:

Half/Split columns using two 2x4s

Post by Rcnewcomb »

Held two 2x4s with a round disk on each end and machined them on the rotary to end up with two half or split columns. This way it appears you have pieces with undercuts. I was very conservative on the rounding for this one so the total cut time was just under 28 minutes. I can probably get this down to 15 minutes, i.e. about 7.5 minutes per split column piece.
A_IMG_0806 (2).jpg
B_IMG_0802.jpg
C_IMG_0800.jpg
D_IMG_0808.jpg
E_IMG_0809.jpg
F_IMG_0810 (2).jpg
- Randall Newcomb
10 fingers in, 10 fingers out
another good day in the shop

jimwill2
Vectric Wizard
Posts: 589
Joined: Tue Aug 31, 2010 1:48 am
Model of CNC Machine: CaMaster Stinger w/recoil, FTC
Location: Parkville, Missouri

Re: Half/Split columns using two 2x4s

Post by jimwill2 »

Nice work!
Jim Williams

Bobtail Farm
Vectric Craftsman
Posts: 156
Joined: Mon Dec 01, 2014 3:53 pm
Model of CNC Machine: Homemade

Re: Half/Split columns using two 2x4s

Post by Bobtail Farm »

+1, and thanks for the method of work.

User avatar
TReischl
Vectric Wizard
Posts: 3568
Joined: Thu Jan 18, 2007 6:04 pm
Model of CNC Machine: 8020 Build 48X36X10 RP 2010 Screenset
Location: Leland NC

Re: Half/Split columns using two 2x4s

Post by TReischl »

Nicely done Russ!

There is a technique you can use that turners use quite often.

Put a piece of wrapping paper (or a paper bag works well) between them with some glue. That will hold them together nicely while turning yet allow them to be split apart easily when finished.

I really like your disc technique and I am going to put that in my bag of tricks for plain old turning.
"If you see a good fight, get in it." Dr. Vernon Jones

User avatar
Martin Reid
Vectric Apprentice
Posts: 93
Joined: Wed May 18, 2016 6:00 pm
Model of CNC Machine: Shopbot
Location: Lancashire UK
Contact:

Re: Half/Split columns using two 2x4s

Post by Martin Reid »

Dear Randall

Looks good (and quick)

For those without 'rotary' or a 5th axis - it is possible to make columns from flat stock and an 18mm Radius Cutter. But not quick!

Sincerely and in good faith
Martin
Setting Out
Setting Out
known position on bed
known position on bed
Slowly step round the piece
Slowly step round the piece
until ¼ round and fluted
until ¼ round and fluted
Glue them together in halves
Glue them together in halves
Then glue the halves
Then glue the halves

Post Reply