# Sled going off Spoil Board

**URL:** <https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388>\
**Category:** Troubleshooting\
**Created:** [March 27, 2024, 10:14pm UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388 "2024-03-27T22:14:42Z")\
**Posts on this page:** 20\
**Page:** 1

<div class="post-metadata">

**Author:** ![steden](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/steden/32/23333_2.png) [@steden](https://forums.maslowcnc.com/u/steden)\
**Post date:** [March 27, 2024, 10:14pm UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/1 "2024-03-27T22:14:43Z")

</div>

I built frame as described 10’ x 8’ 3". I installed 3d printed anchors…amazing!

I’ve increased my "Retract Current Threshold to 1800 as the bands weren’t completely retracting. FIXED.

I go to run calibration and it pulls the sled off the 4’x8’ spoil board. Why?

Maslow tlY: 2050

Maslow trX: 3000  
Maslow trY: 2050

Maslow br: 3000

 ![20240327_180020](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/7/6/767e17b15953c62720a8e94787a81d82342572d3.jpeg)

---

<div class="post-metadata">

**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [March 27, 2024, 10:23pm UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/2 "2024-03-27T22:23:44Z")

</div>

Excellent progress so far!

Hmmm

```auto
Maslow_calibration_offset_X: 500
Maslow_calibration_offset_Y: 500

```

These two values will set how far in from the anchor points in X an Y the corner measurement will be taken…but we’re clearly further off than that would indicate.

---

<div class="post-metadata">

**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [March 27, 2024, 10:26pm UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/3 "2024-03-27T22:26:17Z")

</div>

Would you mind posting your full maslow.yaml file? It must be something in there, but I’m a bit lost as to what it could be. Maybe if I can look at all the values directly I could find it.

Since you are using the default frame which is very similar to mine you could also try deleting your maslow.yaml file and using just the unedited one that comes with the latest firmware. Might be worth a shot.

---

<div class="post-metadata">

**Author:** ![steden](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/steden/32/23333_2.png) [@steden](https://forums.maslowcnc.com/u/steden)\
**Post date:** [March 27, 2024, 10:30pm UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/4 "2024-03-27T22:30:56Z")

</div>

board: Maslow  
name: Maslow S3 Board

Maslow\_vertical: false

Maslow\_calibration\_offset\_X: 500  
Maslow\_calibration\_offset\_Y: 500  
Maslow\_calibration\_size\_X: 10  
Maslow\_calibration\_size\_Y: 9

Maslow\_tlX: 0  
Maslow\_tlY: 2050

Maslow\_trX: 3000  
Maslow\_trY: 2050

Maslow\_blX: 0  
Maslow\_blY: 0

Maslow\_brX: 3000  
Maslow\_brY: 0

Maslow\_tlZ: 144  
Maslow\_trZ: 97  
Maslow\_blZ: 75  
Maslow\_brZ: 117

Maslow\_Retract\_Current\_Threshold: 1800  
Maslow\_Calibration\_Current\_Threshold: 1300

spi:  
miso\_pin: gpio.13  
mosi\_pin: gpio.11  
sck\_pin: gpio.12

sdcard:  
card\_detect\_pin: NO\_PIN  
cs\_pin: gpio.10

stepping:  
engine: RMT  
idle\_ms: 240

uart1:  
txd\_pin: gpio.1  
rxd\_pin: gpio.2  
baud: 115200  
mode: 8N1

axes:  
x:  
max\_rate\_mm\_per\_min: 2000  
acceleration\_mm\_per\_sec2: 25  
max\_travel\_mm: 2438.4  
homing:  
cycle: -1

```
motor0:
  dc_servo:

```

y:  
max\_rate\_mm\_per\_min: 2000  
acceleration\_mm\_per\_sec2: 25  
max\_travel\_mm: 1219.2  
homing:  
cycle: -1

z:  
steps\_per\_mm: 100  
max\_rate\_mm\_per\_min: 400  
acceleration\_mm\_per\_sec2: 10  
max\_travel\_mm: 100

```
homing: 
  cycle: -1

motor0:
  tmc_2209:
    uart_num: 1
    addr: 0
    cs_pin: NO_PIN
    r_sense_ohms: 0.110
    run_amps: 1.000
    hold_amps: 0.500
    microsteps: 0
    stallguard: 0
    stallguard_debug: false
    toff_disable: 0
    toff_stealthchop: 5
    toff_coolstep: 3
    run_mode: StealthChop
    homing_mode: StealthChop
    use_enable: true
    direction_pin: gpio.16
    step_pin: gpio.15

motor1:
  tmc_2209:
    uart_num: 1
    addr: 1
    cs_pin: NO_PIN
    r_sense_ohms: 0.110
    run_amps: 1.000
    hold_amps: 0.500
    microsteps: 0
    stallguard: 0
    stallguard_debug: false
    toff_disable: 0
    toff_stealthchop: 5
    toff_coolstep: 3
    run_mode: StealthChop
    homing_mode: StealthChop
    use_enable: true
    direction_pin: gpio.38
    step_pin: gpio.46

```

---

<div class="post-metadata">

**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [March 27, 2024, 10:32pm UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/5 "2024-03-27T22:32:50Z")

</div>

Well darn, that looks perfect 😕

---

<div class="post-metadata">

**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [March 27, 2024, 10:34pm UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/6 "2024-03-27T22:34:58Z")

</div>

The frame is actually roughly 2050x3000mm, right?

---

<div class="post-metadata">

**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [March 27, 2024, 10:37pm UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/7 "2024-03-27T22:37:28Z")

</div>

When you do the Retract All → Extend All step and then hook the belts up to the anchors, how much extra belt is there?

---

<div class="post-metadata">

**Author:** ![steden](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/steden/32/23333_2.png) [@steden](https://forums.maslowcnc.com/u/steden)\
**Post date:** [March 27, 2024, 10:44pm UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/8 "2024-03-27T22:44:13Z")

</div>

Frame is 10’ (3048mm) x 8’ 3" (2516mm).

When I put the 2000mm and 3000mm in the yaml file, I didn’t haven enough slack and the reason for the extra 50mm.

I was gonna to try and change the X and Y calibration offset. The Left Lower corner of the 4x8’ plywood board is 10in (254mm) away from the Left Lower anchor in the x-axis and 24in (610mm) in the y-axis.

Thoughts?

---

<div class="post-metadata">

**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [March 27, 2024, 10:48pm UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/9 "2024-03-27T22:48:09Z")

</div>

> [@steden](#):
>
> Frame is 10’ (3048mm) x 8’ 3" (2516mm).

It’s weird because that’s basically exactly what mine is so I would expect it to work.

When you go to hook up the belts you should have a good amount of slack…like several inches of extra which makes me think that something might be off there.

---

<div class="post-metadata">

**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [March 27, 2024, 10:48pm UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/10 "2024-03-27T22:48:57Z")

</div>

I think that we should up the frame dimensions even a bit more to give us some more slack. Something like 3100 by 2100

---

<div class="post-metadata">

**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [March 27, 2024, 10:50pm UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/11 "2024-03-27T22:50:13Z")

</div>

> [@steden](#):
>
> (254mm) away from the Left Lower anchor in the x-axis and 24in (610mm)

We could increase the Y-axis offset (Maslow\_calibration\_offset\_Y) to 700 too which should help keep it on the board.

---

<div class="post-metadata">

**Author:** ![steden](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/steden/32/23333_2.png) [@steden](https://forums.maslowcnc.com/u/steden)\
**Post date:** [March 27, 2024, 10:53pm UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/12 "2024-03-27T22:53:28Z")

</div>

Wouldn’t that pull the sled off even farther?

I’ll try a couple different combos and report back.

---

<div class="post-metadata">

**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [March 27, 2024, 10:55pm UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/13 "2024-03-27T22:55:52Z")

</div>

I think that if the frame is actually bigger than the machine thinks it is it will pull in too much belt leading it to go off the side?

So if we want the machine to not go off the side it means we need to tell it that the frame is bigger?

---

<div class="post-metadata">

**Author:** ![steden](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/steden/32/23333_2.png) [@steden](https://forums.maslowcnc.com/u/steden)\
**Post date:** [March 27, 2024, 11:15pm UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/14 "2024-03-27T23:15:28Z")

</div>

I did all of it! and it worked! It’s running calibration right now!

board: Maslow  
name: Maslow S3 Board

Maslow\_vertical: false

Maslow\_calibration\_offset\_X: 700  
Maslow\_calibration\_offset\_Y: 700  
Maslow\_calibration\_size\_X: 10  
Maslow\_calibration\_size\_Y: 9

Maslow\_tlX: 0  
Maslow\_tlY: 2100

Maslow\_trX: 3100  
Maslow\_trY: 2100

Maslow\_blX: 0  
Maslow\_blY: 0

Maslow\_brX: 3100  
Maslow\_brY: 0

Maslow\_tlZ: 144  
Maslow\_trZ: 97  
Maslow\_blZ: 75  
Maslow\_brZ: 117

Maslow\_Retract\_Current\_Threshold: 1800  
Maslow\_Calibration\_Current\_Threshold: 1300

spi:  
miso\_pin: gpio.13  
mosi\_pin: gpio.11  
sck\_pin: gpio.12

sdcard:  
card\_detect\_pin: NO\_PIN  
cs\_pin: gpio.10

stepping:  
engine: RMT  
idle\_ms: 240

uart1:  
txd\_pin: gpio.1  
rxd\_pin: gpio.2  
baud: 115200  
mode: 8N1

axes:  
x:  
max\_rate\_mm\_per\_min: 2000  
acceleration\_mm\_per\_sec2: 25  
max\_travel\_mm: 2438.4  
homing:  
cycle: -1

```
motor0:
  dc_servo:

```

y:  
max\_rate\_mm\_per\_min: 2000  
acceleration\_mm\_per\_sec2: 25  
max\_travel\_mm: 1219.2  
homing:  
cycle: -1

z:  
steps\_per\_mm: 100  
max\_rate\_mm\_per\_min: 400  
acceleration\_mm\_per\_sec2: 10  
max\_travel\_mm: 100

```
homing: 
  cycle: -1

motor0:
  tmc_2209:
    uart_num: 1
    addr: 0
    cs_pin: NO_PIN
    r_sense_ohms: 0.110
    run_amps: 1.000
    hold_amps: 0.500
    microsteps: 0
    stallguard: 0
    stallguard_debug: false
    toff_disable: 0
    toff_stealthchop: 5
    toff_coolstep: 3
    run_mode: StealthChop
    homing_mode: StealthChop
    use_enable: true
    direction_pin: gpio.16
    step_pin: gpio.15

motor1:
  tmc_2209:
    uart_num: 1
    addr: 1
    cs_pin: NO_PIN
    r_sense_ohms: 0.110
    run_amps: 1.000
    hold_amps: 0.500
    microsteps: 0
    stallguard: 0
    stallguard_debug: false
    toff_disable: 0
    toff_stealthchop: 5
    toff_coolstep: 3
    run_mode: StealthChop
    homing_mode: StealthChop
    use_enable: true
    direction_pin: gpio.38
    step_pin: gpio.46

```

 ![20240327_191149](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/5/7/57d80acc69080cc813e54b26a0075995e6ea6762.jpeg)

---

<div class="post-metadata">

**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [March 27, 2024, 11:17pm UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/15 "2024-03-27T23:17:14Z")

</div>

Brilliant! Great work! 😀

Keep me posted on how it goes.

---

<div class="post-metadata">

**Author:** ![steden](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/steden/32/23333_2.png) [@steden](https://forums.maslowcnc.com/u/steden)\
**Post date:** [March 28, 2024, 12:04am UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/16 "2024-03-28T00:04:50Z")

</div>

Computing… This may take several minutes  
Fitness: 0.05185994917353326 in 100 cycles  
Fitness: 0.055213043964903036 in 200 cycles  
Fitness: 0.0573813274846064 in 300 cycles  
Fitness: 0.05922075430633391 in 400 cycles  
Fitness: 0.0612245830259927 in 500 cycles  
…and it goes on…  
Fitness: 0.20495518956387865 in 51600 cycles  
Fitness: 0.20495518956387865 in 51700 cycles  
Fitness: 0.20495518956387865 in 51800 cycles  
Fitness: 0.20495518956387865 in 51900 cycles  
Fitness: 0.20495518956387865 in 52000 cycles  
Calibration complete

I thought you wanted a high number for Fitness…

---

<div class="post-metadata">

**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [March 28, 2024, 12:08am UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/17 "2024-03-28T00:08:17Z")

</div>

You do, that seems decidedly low. I think that about 0.5 is the lowest that’s really usable…but it’s not awful.

---

<div class="post-metadata">

**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\
**Post date:** [March 28, 2024, 12:11am UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/18 "2024-03-28T00:11:49Z")

</div>

Basically what that means is that it’s having a hard time fitting the points to the the frame. We’re only talking about a few mm of error so we’re quite close.

Did all four belts seem tight during each time that it took a measurement?

It might be worth doing the exact same thing again and seeing if it’s different. That feels 98% of the way there. One funky measurement could be throwing it off.

---

<div class="post-metadata">

**Author:** ![ian\_ab](https://avatars.discourse-cdn.com/v4/letter/i/a587f6/32.png) [@ian\_ab](https://forums.maslowcnc.com/u/ian_ab)\
**Post date:** [March 28, 2024, 7:48am UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/19 "2024-03-28T07:48:02Z")

</div>

Did you place the arms in the correct order?

---

<div class="post-metadata">

**Author:** ![steden](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/steden/32/23333_2.png) [@steden](https://forums.maslowcnc.com/u/steden)\
**Post date:** [March 28, 2024, 12:00pm UTC](https://forums.maslowcnc.com/t/sled-going-off-spoil-board/20388/20 "2024-03-28T12:00:46Z")

</div>

Yup. Just like this …

[![](https://images.squarespace-cdn.com/content/v1/57e561e720099e0d7a7f6aca/bef14de2-90dc-4263-a3a3-cfcdf4de033e/ezgif-2-ec89d96c97.gif?format=1000w) ](https://images.squarespace-cdn.com/content/v1/57e561e720099e0d7a7f6aca/bef14de2-90dc-4263-a3a3-cfcdf4de033e/ezgif-2-ec89d96c97.gif?format=1000w)

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