# Maximium width and height of frame

**URL:** <https://forums.maslowcnc.com/t/maximium-width-and-height-of-frame/21272>\
**Category:** Troubleshooting\
**Tags:** calibration\
**Created:** [May 29, 2024, 7:39am UTC](https://forums.maslowcnc.com/t/maximium-width-and-height-of-frame/21272 "2024-05-29T07:39:54Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![dlang](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/dlang/32/859_2.png) [@dlang](https://forums.maslowcnc.com/u/dlang)\
**Post date:** [May 30, 2024, 3:39pm UTC](https://forums.maslowcnc.com/t/maximium-width-and-height-of-frame/21272/7 "2024-05-30T15:39:56Z")

</div>

Ruedi Anneler wrote:

> My understanding:
> 
> According to the web-page [http://lang.hm/maslow/maslow4\_frame.html](http://lang.hm/maslow/maslow4_frame.html) you’re pointing to, the max. anchor bolt positions are (x/y, mms)
> 
> - 0000 x 0000 left bottom
> - 0000 x 2440 left top
> - 3048 x 0000 right bottom
> - 3048 x 2440 right top

what do you mean by ‘max’? you can make the frame bigger than that

> The max. working area size is 2440 x 1220 mms then  
> Is this correct?

I would say that with a frame that size, a working area of 2440\*1220 is  
optomistic and will have errors around the edges (outside the green area of that  
page)

now, it may be that those errors are small enough that they don’t matter for  
your use case.

This is the size frame that Bar built and did his testing and development on,  
for his uses, he did not notice the errors.

> On web page ([Wooden Frame — Maslow](https://www.maslowcnc.com/wooden-frame) I find this figures:  
> Frame width 10 Feet (3’048 mms), frame height 8 Feet (2’438.4 mms)  
> This frame is too small to insert the anchor bolts.

I’m not sure what you means by “this frame is too small to insert the anchor  
bolts”

> On the web page mentioned above I find for the working board a size of 4 x 8  
> feet (1219.2 x 2’438.4 mms). This is about the same as the max. cutting area  
> of 2440 x 1220 mms that can be found here:  
> [http://lang.hm/maslow/maslow4\_frame.html](http://lang.hm/maslow/maslow4_frame.html)
> 
> I think that the working board size is too small too. To be able to use the  
> max. cutting area, the base board must be on all sides about 100mms or so  
> bigger than the max. size working piece to allow to put a strip around the  
> working piece that has the same height as the top surface of the working  
> piece. This allows to move the Maslow4 to use its full max. cutting area.

I agree that if you are cutting all the way to the edge, you want support to  
keep the sled from tipping off the edge

> Agree?
> 
> If I’m right, could anybody please correct the figures in this web page, please?  
> [Wooden Frame — Maslow](https://www.maslowcnc.com/wooden-frame)

we still need more testing to see how bad the errors are outside the green area  
of my page.

> Besides this it would be nice to clarify the correct relative belt height for  
> each belt at his anchor point. There’s a form enrtry to this, but it does not  
> say what the X=0 base ist for the heights mentioned therein. I assume, that  
> X=0 is the lower surface of the Maslow4 that touches the workpiece during  
> milling.

The default Z values assume that you are going to have a 3/4" wasteboard and the  
anchors are attached to the frame at the same level as the back of the  
wasteboard.

These Z values are the distance down from the arm to the anchor that the belt is  
going.

> Right?
> 
> If this is correct, then the belt height at each anchor bolt must be adjusted  
> depending on the thickness of the cheater panel plus the thickness of the  
> working piece. This is the only way I see to have each belt parallel to the  
> work piece surface. And this makes sure, that the belt tension is always the  
> same, and the belt lenght is correct during milling.

the belt lengths are adjusted to account for the Z offset, both the fixed  
values (different for each arm), and the Z movement from the bottom

> Right?
> 
> If this is the case I’d like to be able to find a clear and concise  
> information/drawing in one place telling anybody about how to build a complete  
> frame with anchor bolts and how to use it (at least for a frame to be used for  
> using the max. size milling area).

the max size milling area is larger than a 4x8 sheet of plywood, the belt length  
can currently go up to a little over 14.5 ft, around 4.5m (and as we add the  
ability to add a  
fixed length to that, can be considerably longer)

If the workpiece is square, that 4.5m of belt will handle a workpiece up to  
around 2.1m/2.1m square on a frame that’s ~4.5m x 4.5m (assuming I haven’t made  
a mistake in my math)

very few people are going to be looking to build a frame that large.

I may have missed something in your questions.

David Lang

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