Is cost, ease of build, routable area, etc. most important?

Design of structural and load bearing framework.

Which objective is most important?

Is as inexpensive as possible to construct.
3
21%
Can be constructed using only common woodworking power tools, such as a circular saw / table saw, and drill / drill press.
3
21%
Will minimize or eliminate the need for obscure, uncommon tools or bits, that likely must be purchased simply to complete the build.
0
No votes
Has finite dimensions, allowing the machine's structural components to be cut ahead of time or offsite, and packaged as a "kit".
0
No votes
Has the capability to cut most, or all, of the pieces needed to duplicate the machine ("Self-Replication").
2
14%
Has clear, and concise documentation, allowing novices to successfully construct it with ease.
4
29%
Includes information about quality low-cost sources for parts and materials, as well as an accurate estimate for the cost to build it.
1
7%
Is supported by the community, who can provide experience, wisdom, and advice for new DIY CNC'ers.
1
7%
 
Total votes: 14

User avatar
Awesomeness
Posts: 107
Joined: Thu Dec 02, 2010 7:29 am
Own CNC?: Yes
Location: Colorado
Contact:

Re: Is cost, ease of build, routable area, etc. most importa

Postby Awesomeness » Tue Dec 14, 2010 10:40 pm


User avatar
JiB
Posts: 8
Joined: Thu Dec 23, 2010 9:15 pm

Re: Is cost, ease of build, routable area, etc. most importa

Postby JiB » Thu Dec 23, 2010 9:47 pm

For me, cost is important. But my time has a price too. I have spent some time designing a drivenut for acme threads that can be cut from 6mm delrin with a lasercutter (could be cut with a cnc router too). While it is nice to push back the costs for myself to say 50 cent a piece, my initial gain was only ~14 euro. That is one example where one should weigh the payoff against the costs, including the time spent.
As for bearings: do you really need them? The mantis design (what I am most familiar with) does just fine with bronze bushings. If you have (or can make) a surface that is smooth enough, then sliding should be preferred over rolling imho.

User avatar
rekoburners
Posts: 4
Joined: Sun Dec 26, 2010 7:03 pm

Re: Is cost, ease of build, routable area, etc. most importa

Postby rekoburners » Sun Jan 02, 2011 4:36 pm

Why is the word accuracy of cut (or motion) ever used? I do not see the point of building a low cost machine if what it produces is scrap!

User avatar
Awesomeness
Posts: 107
Joined: Thu Dec 02, 2010 7:29 am
Own CNC?: Yes
Location: Colorado
Contact:

Re: Is cost, ease of build, routable area, etc. most importa

Postby Awesomeness » Mon Jan 03, 2011 8:09 am


User avatar
rekoburners
Posts: 4
Joined: Sun Dec 26, 2010 7:03 pm

Re: Is cost, ease of build, routable area, etc. most importa

Postby rekoburners » Mon Jan 03, 2011 7:11 pm

I take in coments and I do like the statement that even a poor machine is by far more accurate than cutting by hand.
So moving away from the above post are we ever going to get a desine-size what ever or will the discusion go on till after 2020. I have no experiance of a cnc machine only what I have read in the book! and came to this site with expectations of gidance, Can't are leader not take control and say this is the spec lets start building


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