Backlash

[@h2opower]

Thanks for this video as I just set my Taig backlash now 🤗. Now just waiting on the flood coolant and pump to come in so I can get that all set up. Oh, and it helps to use step-jog when doing this as I set it to 0.01 increments which made it easy to see what the machine was doing.

[@PiotrFoxWysocki]

best explanation i have seen so far ! thank you

[@Madkite]

Remember when setting backlash in mach3 ita not just the backlash tab. In general settings there is another tab which I can't remember the name of. It sets the time to move the backlash. It's important to set as it will try and remove it in an instant otherwise and stall the stepper. However it doesn't work with most non direct parallel port contolers it seems. They just try and move instantly at max feed. This is why I'm going to a stand alone contoler.

[@Y2Kray0]

could you show the circles, after fix the backlash?

[@domenicoizzo6430]

Hi can you help me I have try to set backlash but I don’t see differences, can you tell me in general setting what I need to set please

[@brianCAD48]

I imagine Mach3 backlash compensation should be OK with tiny cutters, but will it cope with say a 1/4" dia cutter in a climb-milling situation? Tight control of positional accuracy was my highest priority when seeking a machine for hobby work. A tiny amount of kerosine or a puff of WD40 will help your cutters survive in aluminum. Thanks for the honest look at your endeavors.

[@JohnSL]

Backlash compensation is most important for small cutters so you get, for example, nice round holes. I wouldn't think it's a problem for large cutters. That being said, I'm thinking about either upgrading to ball screws on this machine, or moving up to a Tormach 770. Also, I'm going to try WD-40 in the future to see if that makes a difference. Finally, I ended up turning off backlash compensation and I plan on doing a video about why (it will be easier to show).

[@brianCAD48]

I'm not sure that backlash compensation can provide for truly round holes - despite it compensating to start the hole in the correct location initially. As the cutter traverses around the inside face of the hole, at one position in both the X and Y axis screws, the thrust of the screw is transferred across the backlash from 'push' to 'pull'. Does the software recognize this - and makes a hasty correction at the appropriate time? This may also explain why bosses inside the mold cavity were not truly round. Larger diameter cutters especially, can grab and pull the work plus table in a sudden jerk through the extent of backlash in the screws.

[@bez6668]

JohnSL

[@pauldiaz4273]

@@JohnSL hey John sorry to bring up this old topic, but did you ever make that video why you turned off backlash comp? Thanks

[@josephcrowley7635]

that articulating noga holder is nice. too bad is holding a turd.

[@JohnSL]

Very true. I need to get a better indicator.

[@fehmiatas]

backlash is not working. there is no reaction. as if no digits were entered. what could be the problem?

[@j.souza.utilidadesedecorac7057]

Amigo quando eu uso essa opcão de folga meus eixo da um delay.... sabe o que pode ser...

[@ianhawthorne7240]

very straight forward thanks!

[@doctorhaber]

Gracias lo mejor es lo mas simple ¡

[@umargul5644]

Well done sir

[@JohnSL]

Thanks.

[@cryptokingdom4987]

Then what about repeatability

[@JohnSL]

Repeatability, as I recall, was always good. It was backlash that was an issue.

[@renyk]

you are a master my friend, thanks you very much

[@michaelorlik3dwaldhessen318]

You are genius

[@seimela]

Mach4, this comment might increase the viewer on this video.

[@gokhanceterez1043]

Are u kidding 😃 0.004 is nothing 😃

[@JohnSL]

0.004 inches... So about 0.1 mm.