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*Expert Elite*
JDMather
Posts: 26,181
Registered: ‎04-20-2006
Message 51 of 65 (531 Views)

Re: Posting a project for comments

05-08-2012 07:58 AM in reply to: JDMather

Double click on the thread feature and set to 26mm length (of course do for both).

 

Edit Sketch1 and change the 50mm to 36mm.

 

Save the file.

 

Short U-bolt.png

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donovandigital
Posts: 49
Registered: ‎02-16-2012
Message 52 of 65 (524 Views)

Re: Posting a project for comments

05-08-2012 10:34 AM in reply to: JDMather

Why circles and not arcs on the board features?

 

Thanks again

 

Joe

*Expert Elite*
JDMather
Posts: 26,181
Registered: ‎04-20-2006
Message 53 of 65 (511 Views)

Re: Posting a project for comments

05-08-2012 11:10 AM in reply to: donovandigital

donovandigital wrote:

Why circles and not arcs on the board features?


Arcs would be better - trying to avoid any problems (with center point, tangencies...)

 

The way I would really sketch that is with a line, drag arc, line, drag arc never leaving the line command.  But beginners sometimes have trouble getting a handle on this technique.

And since we aren't even in the same room....

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donovandigital
Posts: 49
Registered: ‎02-16-2012
Message 54 of 65 (505 Views)

Re: Posting a project for comments

05-08-2012 12:12 PM in reply to: JDMather

Insufficient constraints on the hole feature again... sadsad. I haven't tried any constraints yet but what you specified as I'm assuming you found those sufficient. 

 

Will try from scratch with arc.

 

Also - maybe I misposted, but between the 3 holes there should be 2 raceways for the bearings - width 7mm, depth 7mm. I should do these same way as the holes, right?

 

Thanks again

 

Joe

*Expert Elite*
JDMather
Posts: 26,181
Registered: ‎04-20-2006
Message 55 of 65 (493 Views)

Re: Posting a project for comments

05-08-2012 01:06 PM in reply to: donovandigital

donovandigital wrote:

Insufficient constraints on the hole feature again... sadsad.


 

When you get something like this you have two choices.

1. Keep working at it till you find out why

or

2. attach the file and someone with experience will tell you why within minutes

 

1 is good, but don't take hours beating your head until you try #2.  Whatever you do, don't ignore and leave unanswered.  Finding the how and why will pay off dividends in the future.

 

For the bearing slots - do one and then mirror the other. On something this simple there probably isn't any advantage of mirror sketch or mirror feature.

 

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Active Contributor
donovandigital
Posts: 49
Registered: ‎02-16-2012
Message 56 of 65 (489 Views)

Re: Posting a project for comments

05-08-2012 03:32 PM in reply to: donovandigital

Second sketch, fully constrained. For some reason, the lines turned bule but the arcs didn't?

 

Active Contributor
donovandigital
Posts: 49
Registered: ‎02-16-2012
Message 57 of 65 (482 Views)

another question

05-08-2012 04:05 PM in reply to: donovandigital

Can I change the amount by which I zoom in/out with the mousewheel?

*Expert Elite*
JDMather
Posts: 26,181
Registered: ‎04-20-2006
Message 58 of 65 (471 Views)

Re: Posting a project for comments

05-08-2012 05:15 PM in reply to: donovandigital

Forget drawing as arcs - draw as circles and trim as I first instructed.

 

You have an extra radius dimension (I didn't show to add any radius dimensions).

You are missing tangent constraints between the arcs and the lines.

If I remove the radius dimension and add a tangent constraint - the sketch turns color.

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Active Contributor
donovandigital
Posts: 49
Registered: ‎02-16-2012
Message 59 of 65 (466 Views)

Re: Posting a project for comments

05-08-2012 06:17 PM in reply to: JDMather

I can see where missing constraints are a problem, but does absolutely everything need to be dimensioned? For instance, do construction lines need dimensions?

Active Contributor
donovandigital
Posts: 49
Registered: ‎02-16-2012
Message 60 of 65 (456 Views)

Re: Posting a project for comments

05-08-2012 09:58 PM in reply to: donovandigital

Updated board, ubolts, and eyebolt. Let me know if all is up to spec and I will complete.

 

Really hope I can build this, but I'm worried that some of the detail work is <3mm. A worthy test of my dremel skills at the very least.

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