My Variant of Tantillus
Posted by leonal
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My Variant of Tantillus January 22, 2014 05:39AM |
After been working several months to build an Tantillus by myself , finally , i get this one (see attachment) . I plan share my experience in this topic i created , main change as following:
1. Add some printed nut adapters to use metric bolts and nuts as I can only get the metric ones.
2. Replace 4 printed LM8uu bushings with real LM8uu bearing as i failed with printed ones
3. Replace Extruder with a simple one with large gears (richrap extruder)
4. Simplify the corners
5. Using a big Smart Controller LCD
And it works nicely , someone will like that variant as there are 6 gears running outside when printing
1. Add some printed nut adapters to use metric bolts and nuts as I can only get the metric ones.
2. Replace 4 printed LM8uu bushings with real LM8uu bearing as i failed with printed ones
3. Replace Extruder with a simple one with large gears (richrap extruder)
4. Simplify the corners
5. Using a big Smart Controller LCD
And it works nicely , someone will like that variant as there are 6 gears running outside when printing
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Re: My Variant of Tantillus January 23, 2014 05:29AM |
> 1. Add some printed nut adapters to use metric bolts and nuts as I can only get the metric ones.
You could have built the metric version from WillWorkForPlastic's repo.
***That's right , but before I discovered the metric one by WillWorkForPlastic, I already get yours printed! I'll test WillWorkForPlastic's later
> 2. Replace 4 printed LM8uu bushings with real LM8uu bearing as i failed with printed ones
That will fail very soon. Linear bearings are not designed to have the shafts rotate and the rotation will cause the balls to turn in their races and wear them out.
***Let me check how long they can last. I give up the printed bushings because I tried several pairs of them and still not working. There should have some other replacements.
> 3. Replace Extruder with a simple one with large gears (richrap extruder)
Looks good. Did you make a bracket or just drill some extra holes?
*** It's simple, just drill two extra holes on right panel, and keep some distance of the big gear from the extruder body (I've added five M8 washes to keep the distance)
> 4. Simplify the corners
What holds in the bearings? What holds the case together?
*** The simplified corner can still hold the case together , the bearings are already stick to the case tightly (some glue needed if not). The problem I'm facing is how to keep the robs from slipping away, i think the left and rear robs are already fixed by gears , for front and right ones,
I've added four printed circle clips (stick to robs by using M3 grub screws).
I get this solution finally for I cracked several corners when trying to fix them to the case (maybe I should scale the model a bit? ) , It also cost a lot of time to print the corners and these corners make maintaince difficult after build up.
You could have built the metric version from WillWorkForPlastic's repo.
***That's right , but before I discovered the metric one by WillWorkForPlastic, I already get yours printed! I'll test WillWorkForPlastic's later
> 2. Replace 4 printed LM8uu bushings with real LM8uu bearing as i failed with printed ones
That will fail very soon. Linear bearings are not designed to have the shafts rotate and the rotation will cause the balls to turn in their races and wear them out.
***Let me check how long they can last. I give up the printed bushings because I tried several pairs of them and still not working. There should have some other replacements.
> 3. Replace Extruder with a simple one with large gears (richrap extruder)
Looks good. Did you make a bracket or just drill some extra holes?
*** It's simple, just drill two extra holes on right panel, and keep some distance of the big gear from the extruder body (I've added five M8 washes to keep the distance)
> 4. Simplify the corners
What holds in the bearings? What holds the case together?
*** The simplified corner can still hold the case together , the bearings are already stick to the case tightly (some glue needed if not). The problem I'm facing is how to keep the robs from slipping away, i think the left and rear robs are already fixed by gears , for front and right ones,
I've added four printed circle clips (stick to robs by using M3 grub screws).
I get this solution finally for I cracked several corners when trying to fix them to the case (maybe I should scale the model a bit? ) , It also cost a lot of time to print the corners and these corners make maintaince difficult after build up.
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Re: My Variant of Tantillus January 23, 2014 05:31AM |
Quote
Robonz
So right bout the LM8u not liking rotation. I was thinking about replacing the LM8u with sintered bronze bushings. Are they easy to find?
I'm also interested in it
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Re: My Variant of Tantillus February 27, 2014 10:09AM |
Another one I build,
This time I'm using printed lm8uu bushings, they are working now , some tips here
1. Using sharp edge of the rob to clean inner of the printed bushing, the bushing need stick to the rob very well, too tight not work , too loose not work.
2. Better testing X, Y movement before mount Z axis
3. The two fishing line for X axis or Y axis need to be the same tight
4. Up Gear and moto Gear of X axis or Y axis should be loose contacted
by the way , I've also worked out an Acrylic version for fan mount (can be used to mount 4mm or 5mm fan).
Edited 1 time(s). Last edit at 02/27/2014 10:10AM by leonal.
This time I'm using printed lm8uu bushings, they are working now , some tips here
1. Using sharp edge of the rob to clean inner of the printed bushing, the bushing need stick to the rob very well, too tight not work , too loose not work.
2. Better testing X, Y movement before mount Z axis
3. The two fishing line for X axis or Y axis need to be the same tight
4. Up Gear and moto Gear of X axis or Y axis should be loose contacted
by the way , I've also worked out an Acrylic version for fan mount (can be used to mount 4mm or 5mm fan).
Edited 1 time(s). Last edit at 02/27/2014 10:10AM by leonal.
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