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  #61  
Old 06-03-2011, 12:11 PM
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Default Re: Oshkosh Het M1070, M1000

Boy, Rapid prototyping really gets the gears turning in my head for my next possible build
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  #62  
Old 06-03-2011, 02:20 PM
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Default Re: Oshkosh Het M1070, M1000

Quote:
Originally Posted by sparkycuda View Post
3D Protoprinters are amazingly cool! Are you casting the diff covers in metal or something else? This is a very good build and your workmanship is great. Looking forward to seeing this thing move.

Ken
Thanks Ken, I have not decided on material so far. I have been thinking pewter, but not sure that will hold up. My other thought is JB weld, or liquid metal.

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Boy, Rapid prototyping really gets the gears turning in my head for my next possible build
Yes Steve it opens up the possibably of parts ing isn't it

Last edited by Car5858; 06-04-2011 at 06:27 AM.
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  #63  
Old 06-04-2011, 06:33 AM
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Default Re: Oshkosh Het M1070, M1000

Made the molds using mold putty, came out acceptable. Tried casting with JB Weld, and suprise I have some parts. The parts will clean up with a file and sand paper.

If I have some parts prototyped again I will raise the resoulation. These parts were set on the lowest resoulation for rendering. Although the resoulation does not show in the rendering photo, it will show up in the printed part.
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  #64  
Old 06-04-2011, 10:18 PM
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Default Re: Oshkosh Het M1070, M1000

wow, for just using jb weld the parts really don't look too bad
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  #65  
Old 06-05-2011, 01:49 PM
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Default Re: Oshkosh Het M1070, M1000

I have to agree Russ, this is what they look like cleaned up. To bad it takes 30 hours to harden before you can file and sand them.

I also tried smoothing out the molds, maybe that will help with finishing on the next one.

I also rotated the pinion mount 22.5 degrees so that the hardware will have more material for threading.

I also attached the swivel connectors.

Just a few steps along, classes start in the morning so I will not be able to work on this much during the week for the next two months.
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  #66  
Old 06-07-2011, 11:46 PM
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Default Re: Oshkosh Het M1070, M1000

That's Crazy! what company printed that for you!?
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  #67  
Old 06-08-2011, 01:53 PM
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Default Re: Oshkosh Het M1070, M1000

Zach, the company is https://printaproto.com/index.php I think it was a reasonable rate.

Last edited by Car5858; 06-08-2011 at 01:56 PM. Reason: corrected link
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  #68  
Old 06-09-2011, 10:52 AM
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Default Re: Oshkosh Het M1070, M1000

Parts turned out great! Excellent detail and overall look is so real. Combination of high-tech (3D printer), low-tech (JB Weld), generous supply of imagination and great workmanship, and we get to see top-level modelling. Well done!

Ken
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  #69  
Old 06-09-2011, 11:33 AM
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Default Re: Oshkosh Het M1070, M1000

Thanks for the kind words Ken.

I got a package in the mail the other day, RC4WD Dirt grabber tires. Still waiting on the rims.

My Dad is out of the hospital and is starting on the rims in the morning (weather permitting).

Hopefully in a few days I will have some more photos to post.
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  #70  
Old 06-10-2011, 10:23 PM
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Default Re: Oshkosh Het M1070, M1000

The Stamped rims came in from RC4WD today (one bolt missing). Yes I could not resist the desire to see some tires and rims on this thing.

Mounted the tires on rims, there must be a secret to this part that I haven't figured out so far. The tires wobble slightly side to side as they roll, but not the rims.

As for the rest of the covers I am waiting on more JB weld to arrive. I did find out the hard way about mixing. Not enough hardner and the cover is to soft and flexiable .

Oh well, I will start again in the morning.
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  #71  
Old 06-10-2011, 10:29 PM
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Default Re: Oshkosh Het M1070, M1000

Wow....you have skills
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  #72  
Old 06-10-2011, 11:20 PM
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Default Re: Oshkosh Het M1070, M1000

Thanks Troy
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  #73  
Old 06-27-2011, 10:09 AM
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Default Re: Oshkosh Het M1070, M1000

You are doing a fine job on this build. Those diff covers are amzing., excellant craftmanship!
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  #74  
Old 06-27-2011, 11:34 AM
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Default Re: Oshkosh Het M1070, M1000

Thanks Rob, currently I am awaiting some more parts that I haven't been able to spend time on this for the last week.

Will get more updates when the parts are finished.

Thanks for looking and the encouragement.
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  #75  
Old 07-08-2011, 06:03 PM
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Default Re: Oshkosh Het M1070, M1000

Sample rim came in yesterday, so I set up the rotary table and was going to install the dividing plate. Not the right reduction, this table has a 1:46 reduction cant use the dividing plate. Looked around the net for a 1:46 reduction chart no one seem to have one.

So as an alternative, I wrapped a 1/4 inch wide strip of paper around the rotary table to get the exact circumference, I then drew this up in AutoCAD and divided the legnth by ten with the divide command. Perfect, added an extra 1/2 inch to the length, plotted and attached to the rotary table.

This is the result, the bolts are 2/56 socket head cap screws. I did miss one hole by 1/2 a degree but it is not that noticeable.

So far I am happy. After assembling I found that I have to change the design of the inner hub to allow the locknut to seat properly.

At least I have made some progress.

Thanks for looking
Carl
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  #76  
Old 07-08-2011, 08:30 PM
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Thumbs up Re: Oshkosh Het M1070, M1000

looks good , Carl
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  #77  
Old 07-08-2011, 10:00 PM
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Default Re: Oshkosh Het M1070, M1000

Thanks Steve

Took the rim back to my dads and he was shocked that he missed the dimension. He had started on another rim, so the mod will have to wait till he gets the next one done. Luckily Dad only lives 3 blocks away.
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  #78  
Old 07-09-2011, 12:34 AM
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Default Re: Oshkosh Het M1070, M1000

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Originally Posted by Car5858 View Post
Thanks Ken, I have not decided on material so far. I have been thinking pewter, but not sure that will hold up. My other thought is JB weld, or liquid metal.



Yes Steve it opens up the possibably of parts ing isn't it
I know what JBweld is but what is liquid metal?

Ken
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  #79  
Old 07-09-2011, 01:12 AM
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Default Re: Oshkosh Het M1070, M1000

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Originally Posted by Ken Orme View Post
I know what JBweld is but what is liquid metal?

Ken
Here is a link that explains Liquid metal.
http://www.museumstuff.com/learn/top...:sub::Vitreloy

and it is way out of my price range
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  #80  
Old 07-09-2011, 08:40 AM
Ken Orme Ken Orme is offline
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Default Re: Oshkosh Het M1070, M1000

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Originally Posted by Car5858 View Post
Here is a link that explains Liquid metal.
http://www.museumstuff.com/learn/top...:sub::Vitreloy

and it is way out of my price range
Thank you for the info. I will stick with JBweld.

Ken
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