CNC Stepcraft 2 retrofit mesa + 3D printer stuff

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28 Apr 2020 23:01 #166030 by tommylight
That is way to much for something that can only hold 30 to 40KG ! But it is fast, so that might be why they are so expensive.
Thank you.

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28 Apr 2020 23:05 - 28 Apr 2020 23:20 #166032 by alkabal
Not enough for my project ?

Did you think the stepcraft or similar machine is more heavy ?

The price is near the stepcraft and other similar router, i can found 1000*500*200 RXS-100 = 1673e, RXS-80 = 1429e

the price is higher mostly because this solution need external driver + power supply
Last edit: 28 Apr 2020 23:20 by alkabal.
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18 May 2020 01:39 - 18 May 2020 01:46 #168099 by alkabal
Hi

Is possible to found some better german product but i think the price is not in the same range...
www.isel.com/fr/mwdownloads/download/link/id/9464/

I have also found more heavy linear guide (horyzontal ~100kg, vertical ~50kg
www.aliexpress.com/item/32986676982.html...02_,searchweb201603_

At the end what did you really think about using something like that for make a "multifunction machine" CNC/Printer and maybee if possible to use plasma this can be great (but this is another subject totally unknown for me)

And the most important, i have found a Charly robot work surface ~1mX1m they are not cheap but is full working machine
The first bad point is for surface mount near 2mX2m... (at first i planned something like 1.30x80)
I really like to have some opinion mostly regarding to the machine rigidity and or speed if possible ??

Br
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Last edit: 18 May 2020 01:46 by alkabal.

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21 May 2020 16:11 #168498 by alkabal
Please is really like to have some opinion !

It is possible to found something better than this machine for something like 3500e ?

This machine is derived from isel fb1 or something like this.

Br

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21 May 2020 17:26 - 21 May 2020 17:29 #168502 by Aciera
I think for plasma and 3D-printing the chinese linear drives are probably fine. Mostly because it seems to be able to deliver enough acceleration and speed.
For a mill it would depend on the cutter sizes, materials, cuttingspeed. Maybe if you use high speed cutting strategy that keeps lateral forces to a minimum you could get away with that. The gerrnan isel units would certainly be more capable but I have doubts that the price would be worth it.
As tommy says, try it and report back. Might turn out to be very useful.
I can't really comment on the charly robot because I have no clue as to what acceleration and speeds it is capable of.
Last edit: 21 May 2020 17:29 by Aciera.
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21 May 2020 18:28 - 21 May 2020 18:36 #168508 by alkabal
Thanks a lot for reply.

The charlyrobot i have already a little one (isel ep1090) this one can run approximativly to 110mm/s for 3d print

the isel ep1090 settings are :

# Basic motion configuration
default_feed_rate 200 # Default speed (mm/minute) for G1/G2/G3 moves
default_seek_rate 1000 # Default speed (mm/minute) for G0 moves

# Planner module configuration : Look-ahead and acceleration configuration
# See smoothieware.org/motion-control
acceleration 1000 # Acceleration in mm/second/second.
z_acceleration 200 # Acceleration for Z only moves in mm/s^2, 0 uses default.

# Cartesian axis speed limits
x_axis_max_speed 7000 # Maximum speed in mm/min
y_axis_max_speed 7000 # Maximum speed in mm/min
z_axis_max_speed 500 # Maximum speed in mm/min


At the end the order is mostly for mill aluminum and wood, 3D print this is planed only for some special big parts but not for heavy use.

Did you think this charlyrobot is able to run with plasma ? (with bed change and other mod off course)

The problem for try chinese linear guide, the price is very high for experimenting without more opinion, something like 2800e for a comparable machine than the charlyrobot regarding the work surface, without all mounting parts, slot table, spindle with ATC, driver and other forget parts.

But i'm a little affraid about the charlyrobot rigidity it seem to be the same gantry element size as the mini mill ep1090, with only one ball screw and motor for Y at the center.

Thanks a lot for your usefull opinion.
Last edit: 21 May 2020 18:36 by alkabal.

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21 May 2020 20:04 #168519 by tommylight
sorry to burst bubbles, but that charliebot will not do for plasma for a very simple reason: it has the ballscrew going through the middle of the table!

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21 May 2020 20:57 #168531 by alkabal
Wrong it can do plasma only one time :laugh:

If this is the only one real problem I think this can be upgraded with 2 ball screw and 2 motor with some encoder and or synchronised belt

Plasma is for now only for curiosity but off course this can be a very good things.
!

Did you think for 3500e this charlyrobot is something interesting to order, (machine is in working condition)

Br
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21 May 2020 21:19 #168537 by tommylight

alkabal wrote: Wrong it can do plasma only one time :laugh:

LOL,
Nice one, thank you.

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23 May 2020 16:00 #168693 by Aciera
Its always really hard to give an opinion about what other people should or should not buy. If you like building then why not build your own router table so you get the size and the rigidity you want. If you want to get going right away then its probably better to buy a used one. I don't have a router table my mill weighs in at 1500kgs for 400x250x400 travel its plenty rigid but not very fast. I could probably do 3D printing on that as well mind you if I would slow the speed down enough and I were patient enough to wait for it to finish.
My philosophy is to either buy good quality used with maybe a bit of a fix up or to build my own. I don't know if that charly bot is good quality but it seems to fit your requirements.

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