Which kit to get?

[NickLatech]

I am good with electronics so any conversion like using the computer power source to drive the system is no problem at all.

I want to know which kit will suit my needs better. I want to engrave circuit boards. I just picked up a cross slide table for my x and y axis http://www.harborfreight.com/cpi/cta...itemnumber=538 for 20 bucks so if this is a bad idea let me know and I wont use it.

Here are the electronic kits I found so far

hobbycnc's "3 Axis Package With (3) 80oz-in Steppers" from http://www.hobbycnc.com/cncpackages/...g/4aupcpkg.htm ?

and

stepperworld's http://209.41.165.153/stepper/sp3HT.htm is this worth the extra 80$ dollars?


Nick

[ger21]

IMO, the HobbyCNC is a much better setup. You'll get a lot more speed, and it's much more efficient. But you really want to use at least 24V for best performance. And before you say speeds not important, trust me, it is.

[NickLatech]

great, thanks for the info

[noid]

Be careful those vises hav alot and i mean alot of backlash. But of course you probably are changing that.

[NickLatech]

i wasnt planing on change anything, what part do you recommend changing? Does backlash mean that it has alot of play?

Nick

[jimmyd7]

i wasnt planing on change anything, what part do you recommend changing? Does backlash mean that it has alot of play?

Nick

Nick,

You'll find a very good article on backlash here:

Backlash

I hope that helps.

Good luck.

[NickLatech]

thanks, yea there is some backlash in the table. I did a search for cross vice and backlash, but didnt come up with any results. I might try and work with it as-is.

Nick

[jimmyd7]

thanks, yea there is some backlash in the table. I did a search for cross vice and backlash, but didnt come up with any results. I might try and work with it as-is.

Nick

Nick,

I believe that some software has backlash compensation tools built in, but I don't know how affective they are. If someone else has experience with it please help Nick out.

Good luck.

[NickLatech]

Thanks, it actually has what i think is alot of blacklash. I have to turn it about 1/8 (5 something from reading the nob) a turn just to get everything tight to the actual table moves, its this way on both of the axis's and turning both directions

Here is a pdf of the design.

http://www.harborfreight.com/manuals/0-999/538.pdf

I want to be cheap, but I dont want something that doesnt work. I would like to see about fixing the current system, but I will replace the stock 'screw' if that is what is required.

Please inform.

Nick

[Torsten]

For a cheap solution you may be able to keep the screw.
There are a few home remedies to help reduce the backlash.
I would call them and get a replacement Part for the screws
Nut Partno. 13 and 22, then figure out a way to mount the
additional Nuts side by side with the originals in a way that
you can make some adjustment on there spacing.
That is all you need for a cheap backlash free operation.
Good Luck

[ViperTX]

Moglice...look at how this is used by many professionals to reduce backlash....it's pretty amazing....I was kinda skeptical, but Home Shop Machinist has had a few articles on how a "seasoned professional" used Moglice to repair a lathe with excessive backlash. Just one of many ways to reduce backlash. You might determine the accuracy of the leadscrew by advancing 1 inch, 10 inches and 20 inches and measuring to see what the variation/accuracy is when you advance the table/carriage in one direction....it will help you determine if you should replace the leadscrew.

[kfong]

I am good with electronics so any conversion like using the computer power source to drive the system is no problem at all.

I want to know which kit will suit my needs better. I want to engrave circuit boards. I just picked up a cross slide table for my x and y axis http://www.harborfreight.com/cpi/cta...itemnumber=538 for 20 bucks so if this is a bad idea let me know and I wont use it.

Here are the electronic kits I found so far

hobbycnc's "3 Axis Package With (3) 80oz-in Steppers" from http://www.hobbycnc.com/cncpackages/...g/4aupcpkg.htm ?

and

stepperworld's http://209.41.165.153/stepper/sp3HT.htm is this worth the extra 80$ dollars?


Nick

Hi Nick,

Here is a another design you might want to look at.

http://www.embeddedtronics.com/microstep.html

http://www.embeddedtronics.com/

kinf@embeddedtronics.com