Ask me what you want to know about the TopsCNC 🇬🇧

@Turlutte :

- Yes the gantry can handle more weight, on the Heavy version.

- The "ZAxis_Cart_bigger" can handle any spindle holder as the hole entrax are the same. It's just bigger to reduce play

@shoe :

- Yes i plan to make a better Y Axis for the Nema23 version (not needed for the Nema17 version).

- Yes I'm thinking about a direct drive on Z axis

- V1 can be concidered as a final version, I will not implement a Nema23 version au something hells to keep it as light as possible

@JMDP : Enfait le "Front Z axis support" a tendance a se courber un peut si on serre trop ou si on tend trop la courroie, si ça ne convient pas tu peux imprimer tout le Z de la heavy, qui reste compatible avec la V1

Thanks. I always had the impression the V1 Y-Axis could be stiffer even with Nema17.

If you add Direct Drive for Z-Axis, please also add it to the V1 :)

it's ok no problem :)

Hello Topsie, thanks for your great design. I am going to make your CNC with NEMA 23. 

.I use the CNC only for cutting 3mm - 30mm Acrylic or PVC to make signboard and 3d letters.

As you know the PVC or Acrylic sheets are coming in standard size of 1220 x 2440 mm.

So I need my working area to be at least 1250 mm width and the length about 1500mm.

Please let me know if I am right  to buy the items as the following :.

- X AXIS: Aluminum 2040 5pcs - Length: 1350 mm

Trapezoidal Screw = 1250 mm x 1 pcs -(Note: Should I buy Trapezoida T8 or T12 for nema 23?)

- Y AXIS: Aluminum 2040 4pcs - Length: 1500 mm

Trapezoidal Screw = 1400 mm x 2pcs - (Note:TrapezoidaT8 or T12 for nema 23?)

- Z AXIS: Trapezoidal Screw: 200mm x 1 pcs - (Note: Thelength is 200mm or bigerfor nema 23?

And what aboutTrapezoida screwT8 or T12 for nema 23?)

Hope to hear from you soon, so I can place the order and buy these items.

have a great time and thank you in advance.

Hello SAM,

it's better to use longer axis on X axis instead of Y axis, better to take 5 pieces of 1500mm and 4 pieces of 1350mm.

For trapezoidale screw, for the nema 23 after many feedback, i recomand to take same length as aluminum profils

For Z axis, i recommand to take 300mm screw because the new version "moredepth" need 50mm more length

I have to say it's probably better to use T12 leadscrew for nema 23 version, but the T8 work very fine !

Hello Topsie,

Thank you so much for the information. I appreciate it a lot.

Where can we find an up to date changelog? i have built the machine and have no idea if there are upgrades without reading through the complete forum. is there a version control somewhere? thanks.

Bonjour à tous et à toutes :)

Merci @Topsie pour toute la recherche et le partage que tu as fait sur les CNC. 
J'ai quelque petite questions tout de même sur la CNC si quelqu'un a des réponses.
Dans le e but de faire ma CNC je ne voudrais pas utiliser une affleureuse/défonceuse à main mais plus une défonceuse prévu à cette effet. Je crois que ça s'appelle un moteur de broche comme celui ci.  
J'aimerais faire une CNC capable d'usiner maximum 1000mm * 1000mm

• Sachant que je voudrais aussi faire de l'alu est ce que un moteur à 800W suffit ou je doit partir sur une 2200W ? 
• Est ce qu'un refroidissement à air est suffisant pour ce moteur ou il vaut mieux partir sur à eau ?
• Si il faut un refroidissement à eau quelqu'un sait comment fonctionne le cable etc ? (surtout pour l'eau enfait)
• J'aimerais partir sur des moteurs nema 23 comme celui ci vous n'y voyait pas de contre indication ?
• Je suis un peu perdu sur les drivers pour nema 23 est ce que vous en avez des bons à conseiller ?

Hi Topsy .. Soon I plan to start building the machine with Nema 23, but I plan to replace T8 with SFU1204. With dimensions of the aluminum profiles from 1300x1600. I found them at a pretty good price after negotiating with the Chinese in Alibaba. Com. So to the question ... I want to make some changes to the SFU1204 bearing for this purpose I will need the CAD file of the whole machine or the file that generates Fusion 360. Is it uploaded somewhere? I want to open all the designed parts at once so that I can use the already created dimensions, not load them one by one. (I work with Fusion 360) Sorry for my English, but I hope I explained it correctly.

Hello from Canada Topsie, and thanks for making your design available.  Open source helps to empower people!  A couple of questions for you; in one of your videos, building the Heavy Version I think - you remove v groove nylon bearings when taking the 1st machine apart, When building the new version you use nylon bearings with a flat surface.  I'm just sourcing all of the parts now.  For Aluminum profiles should I acquire V-groove or will T-groove work?  Should those nylon bearings be V-groove or flat like a conventional 3D printer?  I've started printing parts and am looking forward to getting this project actually working.... 🙂one day.