Drawing problems and revisions required, considered and intended . . . . .

[Alan_c]

Fix drawing 10 40 334: change dimensions of hole positions; 305 to 315, 415 to 425, 545 to 555.

[dragonfinder1]

Most of the 10 20 451 and 10 20 452 drawings show what looks like two slotted holes. One of the drawings does not. My laser cut parts don't have those slots. Do I need to add those slots? Also the same for the 10 30 450.

[Gerald D]

See these posts before the last drawing revisions:
http://www.mechmate.com/forums/showt...0&postcount=20

The slots have been removed. Now use countersunk screws to hold the geared motors to the motor plates.

Will check if the slots need deleting from more drawing views.

[Gerald D]

Support board thickness:

"I relooked at the drawing today and see that I said 24mm max under the screwhead. That was because of the screw length. I should also have given a minimum and that would be 16mm. Anything thinner and I would fear for the head tearing out the bottom section. . . . . this after seeing it happen on our first table and finding it impossible to fix later."

[Gerald D]

Add a note to 10 10 302 S:

If an alternative to the specified C-section is considered, ensure that a minimum cross section moment of inertia (I_xx) value of 0.70 x 10⁶ mm⁴ [1.4 in⁴] is maintained.

And then maybe add a table of alternatives in L-iron and box tubing.

[Gerald D]

Following received via PM:

There used to be a forum for suggested changes, but I couldn't find it.

1) the title block of drawing 10 40 104 indicates that it is for the 250mm z-slide. It is for the 350mm z-slide

2) drawing 10 40 334 doesn't indicate the dimension for the lowest rack-attaching hole. I believe it should be 230mm (9.05")

3) drawing M2 10 124D indicates that the z-rack should be cut 390mm (11.4"). 390mm is 15.35"

I know that dual dimensioning with most cad programs is a pain in the butt.

All the above are valid. These errors need correcting.

[Gerald D]

And then another PM:

mistyped? 10 40 _014_?

Yes

[Gerald D]

M2 30 110 T A

Remove the [3/16" or 1/4" UNC] and replace with [10-32 or 1/4-28]

See "Grub"/set scews for pinion gears, with LocTite ?

[Gerald D]

Drawing 10 60 100 A should explain in what direction the two views are. The top view is the "back" of the MM - looking from y=max towards y=0. (From far side towards near side) The bottom view is from x=max towards x=0 (again from far to near).

[Gerald D]

This mentioned today:

Originally Posted by vanja.ivancic

. . . .

Then I find that last 6 holes on the gauge plate not correspond with holes on the z-slide tube. I think the quotes are wrong???

I think this has been mentioned before, but I repeated it here to remind me.

[MAC2009]

drawing 10 20 400
2. referrers to sub weldment 10 20 450 is that not sub weldment 10 20 451?

[Gerald D]

Thanks MAC. The note 2 should read:

. . . . and the sub-weldments 10 20 451 W or 10 20 452 W as distance gauges . . . .

[Gerald D]

Received via PM:

Drawing Typo Part 4 PDF Sheet M1 30 200:

the spring is labled item 4 and is item 3 on the list

Thanks to the donor!

[Gerald D]

Drawings 10 20 200 A and 10 20 225 A:

- Show the clamp strip in cross-section, showing the tapped hole

- Add the gantry tube in cross-section, through a hole

- Add another view with the whole system tightened together (in addition to the exploded view)

[Shanker]

I need some clarification with dwg 10 10 000. At the bottom of the dwg there is a close up view of a resin filled csk carriage bolt. What does the dotted line in the dwg signify?

Thanks

Rick.

[Gerald D]

Well spotted, and good question. . . . . . but, I can't see any reason for that bit of line being there!

[David Bryant]

Great product Gerald.
I am enjoying gathering the parts and learning about the MM. Some very clever design ideas are implemented here.
I suggest you consider adding an outline of 10 20 440 onto dwg 10 20 200 (210, 220 225) to help clarify the assembly and how the hole sizes are different. It took me a little while to realise this is where the adjustment is for doing the alignment.

Thanks for the well supported product
David

[Gerald D]

This didn't make sense 2 years ago:

Originally Posted by vanja.ivancic

. . . .

Then I find that last 6 holes on the gauge plate not correspond with holes on the z-slide tube. I think the quotes are wrong???

From a recent discussion, it was the inch dimensions that are slightly off, I only check the metric stuff.

[Slipery]

Just a minor point but I dont see any mention of fastener sizes on 10 60 100 or anywhere else in the 10 60 series.

[Slipery]

M1 30 000 A references Higher Drawing 10 30 000 A. This does not appear to be in pdf pack.

[Slipery]

I hope you dont mind me being a nit picker here but I figure if I see an error I should tell someone. Up to you of course to ignore it.

any way another one
10 40 000 and 10 40 014 both named 250mm Z Slide Assembly

[Gerald D]

See post #36 of 03 August 2009 above

[Slipery]

Ok I wont waste my time any more.

[Tom Ayres]

Drawing 10 20 440 S A shows dimensions y=500(19.7") and just below that (2330)(91.7"), what is correct? with a 60" y it would be 79.7" or 2024mm which is far less than the 2330mm.

[Gerald D]

The (2330)[91.7"] was my actual dimension because I built for a 1830 [72"] wide table.

If you want to have a 60" wide table, then you must +19.7" as the drawing shows in blue.

[Tom Ayres]

Thanks for the clarity Gerald, I'm cutting steel and didn't want to muff it up on first cuts.

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