Maximium width and height of frame

alright I’m a bit stuck with the width and height in setup
keep getting
“Grid spacing is too large. Please reduce the grid size or increase the number of points”
error
what is the maximum size dimensions i should use?
and is this the size of the frame, not what I intend to cut…?

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Assuming that you’re setting up to do calibration, this is the maximum size of the “calibration grid” that you are targeting.

So if a sheet of plywood is 2440x1220mm (very close to 8x4 feet) and that’s what you’ll be working with most of the time, then the default (i.e. recommended) max grid width and height is 2000x1000mm.

Next comes grid size, which is a measure of how that max grid width and height will be divided up as the calibration is performed, in general more is better.

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You can enter your frame size on this website:
http://lang.hm/maslow/maslow4_frame.html
And see what sizes you can safely cut (green area) and where it might (not neccesarily too bad) get funky… You can also use this to see what a fitting calibration size would be with your setup and use target.

This is complaining about the spacing between the points in the grid being too far apart. I think that the limit is about 200mm so a 3x3 grid can be at most 200*3=600mm etc.

The issue is that if the points are too far apart we risk either breaking the belts or chewing them up in the gears if the machine doesn’t have a good understanding of it’s calibration yet and tries to move too far outside the already calibrated area

This doesn’t quite make sense to me. For a 3x3 grid there are two intervals between points in each direction. So I would think for an nxn grid the maximum grid size should be (n-1)*200 mm or something similar.

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My understanding:

According to the web-page 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

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

On web page (Wooden Frame — Maslow 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.

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

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.

Agree?

If I’m right, could anybody please correct the figures in this web page, please?

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.
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.
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).

What do you think?

Ruedi Anneler wrote:

My understanding:

According to the web-page 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 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

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

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

Hello David,

first of all thank you for your very fast response and for your useful answers too.

both is higly appreciated.

I’d like to have the opportunity to mill till the borders of a 4x8 plywood plate.

My understanding:

Yes, I’ve seen that I can make the frame bigger than this. And my workshop is big enough to build a bigger frame in case of need, no problem.

So if I want to be secure that my installation is able (not optimistic, but in reality :wink: ) to mill till the edges of a 4x8 plywood plate, I understand that I must mount my anchor bolts on the x and y axis wider apart than 2048 / 1440.

Do you have a recommendation for the values I should use instead?

And yes, I want to expand the wasteboard to prevent the machine tipping off the edge.

Can you please tell me how much additional mms width are needed for this on each edge?
Florian from ahoiwerkstatt in Berne has not got his kit yet. I’m supporting him and his business.

Thank you for the clarification concerning the anchor point’s heights.
I was a bit confused after reading the forum post, but I think I’ve understood now what was meant by these numbers.

So the end of the belts are fixed on the frame, means about 3/4" (or 18 mms) below the surface of the wasteboard.
The fact that the belts are horizontally not parallel to the milled surface is handled by the machine.

If I have understood something wrong so far, please let me know.

Than you.

I got all my questions answered by you, thank you very much :-).

All the best, a lot of joy and a great day

Ruedi

https://biber-boote.ch/





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dlang
May 30

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  • | - |

Ruedi Anneler wrote:

My understanding:

According to the web-page 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 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

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

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


Visit Topic or reply to this email to respond.


In Reply To





|

Biber
May 30

|

  • | - |

My understanding: According to the web-page 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 The max. working area siz…


Visit Topic or reply to this email to respond.

To unsubscribe from these emails, click here.

Mit freundlichen Grüssen

Ruedi Anneler

Kaufen ocder bauen Sie nicht irgendetwas, sondern genau das für Sie Richtige!

Mit den kostenlosen Informationen auf meiner Website (Website redigiert) ersparen Sie sich langwieriges eigenes Suchen im Internet und kostspielige Fehler beim Einkauf und beim Bauen. Falls diese Angaben für Sie nützlich waren oder sind, dann freue ich mich immer über eine kleine Spende. Sie ermöglichen mir damit die Pflege und den Betrieb dieser Website.

Den Link für Ihre Spende finden Sie hier (Website redigiert). Danke.

Ich unterstütze Sie bei Ihrem Vorhaben gerne auch zusätzlich, sei es durch eine individuelle Beratung bei mir, per e-mail, per Telefon oder bei Ihnen meine aktive Mitarbeit vor Ort.

Mein Tarif beträgt CHF 65.- pro Stunde. Allfällige Reisekosten (SBB 1/2 Tax) werden separat in Rechnung gestellt. Die Rechnungstellung erfolgt monatlich.

Ruedi Anneler wrote:

So if I want to be secure that my installation is able (not optimistic, but in
reality :wink: ) to mill till the edges of a 4x8 plywood plate, I understand that
I must mount my anchor bolts on the x and y axis wider apart than 2048 / 1440.

yes, if you want to be able to cut 2048x1440 upi meed the belts significantly
further apart.

Do you have a recommendation for the values I should use instead?

there is no one right answer. That’s why I built that page.

for a given frame dimension, there are lots of workpiece dimenstions that are
basically guaranteed to work (anything in the green area) and outside of that
you will start to get position errors (small at first, growing as you get
further into the white and red areas)

the calculator draws a black box of the workpiece dimensions that you enter,
juggle the frame size and workpiece dimensions until you are happy with them.

And yes, I want to expand the wasteboard to prevent the machine tipping off the edge.

Can you please tell me how much additional mms width are needed for this on each edge?

to keep from tipping? we don’t know for sure with the maslow 4, but it can’t
possibly be more than the radius of the sled (8 inches) and probably
significantly less will work, I would probably go in the 4-6" range.

note that this support area does NOT need to be in the green zone, that’s the
area that having the bit in will not have two belts hit the uprights on the sled

Florian from ahoiwerkstatt in Berne has not got his kit yet. I’m supporting him and his business.

Thank you for the clarification concerning the anchor point’s heights.
I was a bit confused after reading the forum post, but I think I’ve understood now what was meant by these numbers.

So the end of the belts are fixed on the frame, means about 3/4" (or 18 mms) below the surface of the wasteboard.
The fact that the belts are horizontally not parallel to the milled surface is handled by the machine.

If I have understood something wrong so far, please let me know.

yes, there hasn’t been enough testing yet to know if this is better than having
the belts parallel to the workpiece or not. It’s easy to do and avoids a lot of
problems we had with the earlier maslow with the frame flexing, which is why Bar
started with that (and since it ‘worked for him’ he didn’t test all the other
possibilities, that’s for us to do :-p )

David Lang

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Welcome back to the forums, Biber!

You included your email address in your last post. The forums are public and likely scraped by various spam bots. Therefore we recommend you don’t post email addresses unless you want a lot of email. You can edit to post the remove it or DM me and I can remove it for you.

Hello John,

thank you for your tip. It is highly appreciated.

My website and email were part of my email responses to David.

As I was not able to find out how to remove them from my postings, could you please do this for me?

Your help by doing this is highly appreciated too, of course :-).

I wish you a great day

Ruedi





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jwolter
June 1

|

  • | - |

Welcome back to the forums, Biber!

You included your email address in your last post. The forums are public and likely scraped by various spam bots. Therefore we recommend you don’t post email addresses unless you want a lot of email. You can edit to post the remove it or DM me and I can remove it for you.


Visit Topic or reply to this email to respond.


In Reply To





|

Biber
May 30

|

  • | - |

Hello David, first of all thank you for your very fast response and for your useful answers too. both is higly appreciated. I’d like to have the opportunity to mill till the borders of a 4x8 plywood plate. My understanding: Yes, I’ve seen that I can make the frame bigger than this. And my works…


Visit Topic or reply to this email to respond.

To unsubscribe from these emails, click here.

Mit freundlichen Grüssen

Ruedi Anneler

Kaufen ocder bauen Sie nicht irgendetwas, sondern genau das für Sie Richtige!

Mit den kostenlosen Informationen auf meiner Website (Website redigiert) ersparen Sie sich langwieriges eigenes Suchen im Internet und kostspielige Fehler beim Einkauf und beim Bauen. Falls diese Angaben für Sie nützlich waren oder sind, dann freue ich mich immer über eine kleine Spende. Sie ermöglichen mir damit die Pflege und den Betrieb dieser Website.

Den Link für Ihre Spende finden Sie hier (Website redigiert). Danke.

Ich unterstütze Sie bei Ihrem Vorhaben gerne auch zusätzlich, sei es durch eine individuelle Beratung bei mir, per e-mail, per Telefon oder bei Ihnen meine aktive Mitarbeit vor Ort.

Mein Tarif beträgt CHF 65.- pro Stunde. Allfällige Reisekosten (SBB 1/2 Tax) werden separat in Rechnung gestellt. Die Rechnungstellung erfolgt monatlich.