B9A tube right angle mounts

[ruffrecords]

I am printing the test block right now whilst reading the various links about calibration. It says it should take a little over 55 mins.

Cheers

ian

And the results are in.

The rectangular measurements are all very good. Even the 2 inch dimension is within 1 mil at the bottom and 3 mils at the top. All the shorter ones are within 1 mil. The only problem is with circles or hexagons on vertical faces where the top is lower than it should be. For example the top to bottom flat on the M3 nut hexagon should be 5.5mm but it is 5.33. The worst of the other two pairs is 5.47mm.

The problem is the initial unsupported span which seems to have drooped. I would not expect to see this where the holes/hexagons are laying in the XY plane.

Edit: In fact the holes in the top surface are all too small. The 0.24" for example is only 0.233". I don't have any imperial drill bits to try out so a future version with some metric holes like 3mm, 6mm and 10mm would be useful

Cheers

Ian

 

[13engrsapper]

And the results are in.

The rectangular measurements are all very good. Even the 2 inch dimension is within 1 mil at the bottom and 3 mils at the top. All the shorter ones are within 1 mil. The only problem is with circles or hexagons on vertical faces where the top is lower than it should be. For example the top to bottom flat on the M3 nut hexagon should be 5.5mm but it is 5.33. The worst of the other two pairs is 5.47mm.

The problem is the initial unsupported span which seems to have drooped. I would not expect to see this where the holes/hexagons are laying in the XY plane.

Edit: In fact the holes in the top surface are all too small. The 0.24" for example is only 0.233". I don't have any imperial drill bits to try out so a future version with some metric holes like 3mm, 6mm and 10mm would be useful

Cheers

Ian

Wow, dang close on the external measurements! I will make a metric one today after my coffee.

 

[shaggy]

And the results are in.

The rectangular measurements are all very good. Even the 2 inch dimension is within 1 mil at the bottom and 3 mils at the top. All the shorter ones are within 1 mil. The only problem is with circles or hexagons on vertical faces where the top is lower than it should be. For example the top to bottom flat on the M3 nut hexagon should be 5.5mm but it is 5.33. The worst of the other two pairs is 5.47mm.

The problem is the initial unsupported span which seems to have drooped. I would not expect to see this where the holes/hexagons are laying in the XY plane.

Edit: In fact the holes in the top surface are all too small. The 0.24" for example is only 0.233". I don't have any imperial drill bits to try out so a future version with some metric holes like 3mm, 6mm and 10mm would be useful

Cheers

Ian

I made the cal. block on my A1 Mini, from PETG. The overall 1" x 2" size was about 0.012" undersize on each side, the 1/2" x 3/4" recess was spot-on, and the 1/8" and 1/4" holes were both a firm push fit for the appropriate pin gauge.
The 5.5mm hex was spot on except for the vertical measurement, due to slight drooping of the hot filament across the unsupported (top) span.
All pretty much what I expected and similar to my experience in making small mechanical parts on this machine w/ the same material.
(3D printed parts are not necessarily 'finished' as-is. You should expect sometimes to have to deburr/smooth edges, check and resize holes, etc, the same as for any other process.)

 

[13engrsapper]

And the results are in.

The rectangular measurements are all very good. Even the 2 inch dimension is within 1 mil at the bottom and 3 mils at the top. All the shorter ones are within 1 mil. The only problem is with circles or hexagons on vertical faces where the top is lower than it should be. For example the top to bottom flat on the M3 nut hexagon should be 5.5mm but it is 5.33. The worst of the other two pairs is 5.47mm.

The problem is the initial unsupported span which seems to have drooped. I would not expect to see this where the holes/hexagons are laying in the XY plane.

Edit: In fact the holes in the top surface are all too small. The 0.24" for example is only 0.233". I don't have any imperial drill bits to try out so a future version with some metric holes like 3mm, 6mm and 10mm would be useful

Cheers

Ian

Happy New Year Ian and Everyone.

Here is the Metric Calibration Block for you. I put holes of exact size in 3, 4, 5, 6, 8, and 10mm along with matching depth for each hole on one axis, and through holes on another.

Additionally, on the lower flat, I included ANSI Specified Clearance holes and threaded holes for: M3 x .5, M4 x .7, M5 x .8, M6 x 1, and M8 x 1.25mm.

Next to those are 10mm wide through hole rectangles. the 5mm wide opening should match your 5mm remainder etc, and down to 4 and 3 and so on. That they match is most important. ID to OD.

The block is 75mm square and 50mm high at max. There are external measurements provided. I radiuses the bottom edges slightly to make removal from your platforms easier.

Same thing on the file as before - change the .txt file extension to .stl

I am going to replace them just as soon as my set of 6 multi-cap can replacement cans are done lol.


-T

 

[ruffrecords]

@13engrsapper thanks for that. I just started the print. It takes 3hrs 23mins. As it is nearly 11.30pm here it will finish early next year.

Happy New Year everybody

Ian

 

[13engrsapper]

@13engrsapper thanks for that. I just started the print. It takes 3hrs 23mins. As it is nearly 11.30pm here it will finish early next year.

Happy New Year everybody

Ian

Oh man - Sorry, that is a long test print - perhaps I should try to shrink it up for next year I figured larger dimensions it might be easier to calculate errors.
Happy New Year!

 

[shaggy]

Happy New Year to all!