Easy Tower Squareness, Parallelism and Distance check

User-Generated tips and tricks for the Rostock Max, Orion, H1.1, or H1 Printers
Post Reply
ccavanaugh
Printmaster!
Posts: 298
Joined: Wed Dec 12, 2012 5:03 pm
Location: Indiana

Easy Tower Squareness, Parallelism and Distance check

Post by ccavanaugh » Thu Feb 20, 2014 7:48 pm

During a rebuild of my machine I switched to use of a couple of drafting triangles to check for square. I was struggling to check with my framing squares because of the stamped rounded edges. I was also fighting to get a good sight because of the exterior draft on the outer faces of the extrusion.

A better quality framing square is in order, but the drafting triangles were handy and have nice sharp square edges.

Also, I wanted an easy way of checking for parallelism and equal distance between towers. Theoretically, if all towers are square, the other values should fall in line, AND I always like to double check using a different method.

The pictures below are the end result using drafting triangles aided by a piece of tap or a thin marker.

If you tuck the triangles into the slots, you can bias them tightly to the insides of the extrusion channel. They are also thin enough that they don't bind in the extrusion when you rotate them together.
The spring clamp was there to aid in taking pictures, but ideally, you should not use it and use hand pressure only.

1. You can check for square at the base by holding each triangle firmly to the tower extrusions and slide then down to the print surface or top plate.
2. If the bottom of the triangles are parallel with each other, you now know the towers are parallel to each other.
3. If you mark the triangle overlap with a pieces of tape or marker and move them up and down or between pairs of towers, you can visually check for equal distance assuming you meet the #2 requirement.
4. At any point along the length of the extrusions, 2 and 3 should be good, otherwise that could be an indicator of a bent tower.

Those familiar with winding sticks should feel very comfortable with sighting for parallelism.

20140209_160801.jpg


20140209_160653.jpg


What I like best about this is that it's a fast and accurate visual check with a simple tool. If you can find tinted triangles, it might be a bit easier to see any errors. After a couple of attempts, it's fairly easy to get a feel for the process and quick. It's also easy to check for bent extrusions without removal of the carriages.

User avatar
Eaglezsoar
ULTIMATE 3D JEDDI
Posts: 7185
Joined: Sun Apr 01, 2012 5:26 pm

Re: Easy Tower Squareness, Parallelism and Distance check

Post by Eaglezsoar » Thu Feb 20, 2014 8:05 pm

What size triangles are you using in the pictures?

ccavanaugh
Printmaster!
Posts: 298
Joined: Wed Dec 12, 2012 5:03 pm
Location: Indiana

Re: Easy Tower Squareness, Parallelism and Distance check

Post by ccavanaugh » Thu Feb 20, 2014 8:09 pm

8" 45 degree and a 12" 60 degree

enggmaug
Printmaster!
Posts: 305
Joined: Wed Nov 13, 2013 3:54 am
Location: Antony, France

Re: Easy Tower Squareness, Parallelism and Distance check

Post by enggmaug » Fri Feb 21, 2014 5:41 am

Thanks for the tip... I'll check that this week-end.

User avatar
Eaglezsoar
ULTIMATE 3D JEDDI
Posts: 7185
Joined: Sun Apr 01, 2012 5:26 pm

Re: Easy Tower Squareness, Parallelism and Distance check

Post by Eaglezsoar » Fri Feb 21, 2014 6:33 am

Got to buy the triangles, I think that this is a great way to ensure the uprights are straight and square to the top plate.
Thank you for the tips!

ccavanaugh
Printmaster!
Posts: 298
Joined: Wed Dec 12, 2012 5:03 pm
Location: Indiana

Re: Easy Tower Squareness, Parallelism and Distance check

Post by ccavanaugh » Fri Feb 21, 2014 6:42 am

Thank you!

For those who try, let me know how it works out, or if there are other adaptations for the triangles. If it works well for others, it might be a good addition to the assembly guide.

User avatar
Eaglezsoar
ULTIMATE 3D JEDDI
Posts: 7185
Joined: Sun Apr 01, 2012 5:26 pm

Re: Easy Tower Squareness, Parallelism and Distance check

Post by Eaglezsoar » Fri Feb 21, 2014 6:53 am

ccavanaugh wrote:Thank you!

For those who try, let me know how it works out, or if there are other adaptations for the triangles. If it works well for others, it might be a good addition to the assembly guide.

Do you think that (2) 10" triangles would work?

ccavanaugh
Printmaster!
Posts: 298
Joined: Wed Dec 12, 2012 5:03 pm
Location: Indiana

Re: Easy Tower Squareness, Parallelism and Distance check

Post by ccavanaugh » Fri Feb 21, 2014 12:25 pm

Will check this evening. The limiting factor is they need to be less that the distance between the towers. Longer will be better to help identify mismatch.

User avatar
Eaglezsoar
ULTIMATE 3D JEDDI
Posts: 7185
Joined: Sun Apr 01, 2012 5:26 pm

Re: Easy Tower Squareness, Parallelism and Distance check

Post by Eaglezsoar » Fri Feb 21, 2014 12:34 pm

ccavanaugh wrote:Will check this evening. The limiting factor is they need to be less that the distance between the towers. Longer will be better to help identify mismatch.


No need to check I will buy the 8" and the 12" that way I know they will work.
I have to buy them anyway and Amazon has some good prices with Prime shipping.

Post Reply

Return to “General Tips 'N Tricks”