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How are the noulei rails?
I have some noulei ground ballscrews for a 3d printer project that I want to do after my CNC build. They look quite nicely made to be honest... the guy I bought all my HIWIN and TBI rails/screws from also had noulei stuff, it would have been quite a lot cheaper.
Some of the chinese stuff can actually be quite good. Admittedly some can be utter crap, but I've had far more positive experiences than negative in recent years.
Well I havent got much to compare to as this is my first machine build :)Quote:
Originally Posted by Zeeflyboy
But movement is smooth and no apparent play anywhere.
But on the drawings I recived and had my plates milled after said m6 for the 20mm rails. But m6 bolthead don't fit the rails X)
No biggie because I messed up the CAD for the Z dropplate anyhow so it has to be re done anyway.. Will go aluminium next time. 15mm steel feels OTT heavy ;)
The ballscrews look nice and feels good but I don't know if I like the vipers on the ballnuts. Time will tell if they hold up !
If you put the bolt in a battery drill and spin it against a grinding wheel for a few seconds they will fit fineQuote:
But m6 bolthead don't fit the rails X)
Yeah, got that advice from jazz also :)Quote:
Originally Posted by Clive S
Where is he by the way?
Would have done so if I only had put the holes in the right places on the plate hehe.
The thing I ment is that you should always measure the parts and not trust Chinese drawings!
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it seems to be sure.maybe it is produced at a very high real cost.Quote:
Originally Posted by Nr1madman
Hello my friend! What is produced at a high cost? :)Quote:
Originally Posted by cncmachineokk
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Huge milestone for me!
Have been filing down the epoxy miniscus, feels awsome :D
The sides of epoxy are still fluffy but I'm getting there..
First screw in the master X rail is in ;)
https://image.ibb.co/d1riga/20170805_135605.jpg
Now it's only about 20 left then I can measure out the final gantry width and order some extrusion YEEEAH!! :D
Had to try my X axis plates out on the rail. Feels awsome!
Now it's just waiting for a cool gantry ;)
https://image.ibb.co/dpxOEv/20170805_210102.jpg
It looks good !!! It is coming along nicely!
Small update!
The y axis plates seems to fit well :)
Also the Z motor looks good in its spot!
Have to wait for the gantry extrusions before knowing for certain if everything is super :D
As you can see I started to paint a few parts red. Looked like utter crap so I have started to sand it off again. Have been masking all bearing and mating surfaces off but how should I preserve these from wear? Just oil heavily before final assemble?
https://image.ibb.co/ms39Pv/20170808_100056.jpg
Use paint remover, it is faster and make the paint leave in flakes, so no dust to worry about.
Good idea ;)Quote:
Originally Posted by Nickhofen
Sanding is therapy for me so I might stick with it hehe.. anyway I just have to get it smooth so I can paint it again! And lesson learned, no more ultra cheap spray cans.
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what are the parts you are painting there made from?
In my experience aluminium doesn't massively like to be painted... generally found results were lacking unless an etch primer was used.
Needless to say, regardless of the metal type you need to be meticulous about degreasing first too. A good soak and scrub in hot water with either some proper degreaser or washing up liquid will help a lot with getting a lasting finish.
What parts are you worried about wear on? Mating surfaces shouldn't be moving really once assembled so I wouldn't be overly concerned about wear and tear on them.
Well.. Im not really worried about wear.. more about rust :) The surfaces under the bearings should be okay since they are tight but when painting I mask of a little more then required so that I dont get paint in the wrong place ;)Quote:
Originally Posted by Zeeflyboy
The router will have its home in a shed I built in my backyard.
I will have some heat in there but it can probably get pretty moist in spring and fall.
All my plates are steel right now.
But because I made some mistakes on my Z dropplate and have to redo it I'm probably gonna do it in aluminium.
Good advice about the washing! Thanks..
Before I painted now I just scrubbed the parts down with an alkoholbased degreaser..
There are many things to think about when taking the leap and building yourself a machine! Sometimes it's hard not to forget some crucial step when you are progressing :)
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AAAaHHGrrr just broke a tap in a hole for my master rail on the X axis.. frustrating as hell!!
look on it as a learning curve and not a frustration :positive:Quote:
Originally Posted by Nr1madman
You are correct as always :DQuote:
Originally Posted by Clive S
I have calmed down, bought a new tap and ready for new holes hehe
could be worse, could have snapped off flush with the hole....
Well.. what do you mean? I did just that? There will be no getting the old tap out and will have to skip a bolt in that hole?Quote:
Originally Posted by Zeeflyboy
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ah when you said ready for new holes with the new tap I thought your problem was solved so assumed the old tap was extracted!
Shame it's all steel, you could have dissolved the old tap if it was stuck in aluminium. I don't suppose you have suitable welding equipment to Tig weld something to the top of the tap?
edit - oooh, useful if it's a straight flute tap http://www.waltontools.com/products/remvtap.htm
double edit - some ideas here? https://www.youtube.com/watch?v=IZsjj7pqBXc
triple edit - cromwell have a nice selection of tap extractors https://www.cromwell.co.uk/shop/hand...ctors/03020107
I had a look at similar tapextractors today but they were only for standard taps with 4 straight grooves. My tap is the spiral kind..Quote:
Originally Posted by Zeeflyboy
So no go on the extraction ;)
Only have a stick welder right now and it's not really a good idea with the epoxy already applied :D
But I think it will be okey in the end anyway!
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New question!!
All you hiwin users get the sexy green dust guards to put in the rail screw holes. For my noulei rails I got red ones.. they have a really tight fit but no stops or nothing so they easily get pressed down into the holes.
Is it the same for hiwin?
whats wrong with putty :hysterical:Quote:
Originally Posted by Nr1madman
My clone rails and my original rails never came with caps but mounting my rails at right angles so not so worried about them becoming fouled up.Quote:
Originally Posted by Nr1madman
Desertboy since you have use both Hiwi rails and some other similar, have you notice difference in quality? What about tollerance between rails and sliders ?Quote:
Originally Posted by Desertboy
The rails feel identical between the originals and clone but the clone rails don't seem as high quality metal but that's really a gut thing only time will tell. Tolerance on the cheap rails seems spot on just as good as the originals.Quote:
Originally Posted by Nickhofen
The clone rail was £100 for 2* 1.5m and 4 carriages delivered! so I wasn't expecting it to be as good but it does feel real nice based on initial impressions I can see me buying more of the clone rail down the line for a plasma cutter table.
Thanks for the reply, can you point me a seller? Or anyone else can give info about a prompt seller.Quote:
Originally Posted by Desertboy
Took me a while to find the ebay listing bastards have put them up £40 now! Wish I'd bought more of them but will keep an eye on them to see if they reduce the price again at some point.Quote:
Originally Posted by Nickhofen
http://www.ebay.co.uk/itm/15-1500mm-...N/282574638774
They are out of stock but they are always out of stock lol not surprising at the price but they seem to restock monthly. If you're getting crazy delivery prices send them an email my friend bought a set to US and ebay was quoting him £500 delivery lol but when he contacted them it cost him $30 for P&P. They seem to sell out in a week after each restock so probably worth sending them a mail if your interested or you'll miss it.
It's free delivery to UK which is nice.
The price they have the plasma cutters up for
http://www.ebay.co.uk/itm/CUT50-Plas...item5d746be6a1
I think I will be buying 2 sets of 1.5m rails and the cutter from them but that'll be after Xmas more interesting things to build and do first ;)
OK I will text them, 500 for delivery seems a little bit high, lol!Quote:
Originally Posted by Desertboy
Small update :D
The extrusions for the gantry has arrived. YEEEAH! !
Have tried to paint a few parts and tapped alot so maybe there will be good progress from here ;)
Some pics below of test fit fitment.
Have not joined the extrusions in their L formation yet only screwed in the X plates
https://preview.ibb.co/ePrSSQ/20170823_112540.jpg
https://preview.ibb.co/jgZQE5/20170823_112710.jpg
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Looks nice and beefy!!!
Well... I hope so ;)Quote:
Originally Posted by Nickhofen
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Small update!
Pimped my y axis a bit ;)
And a question.
My motors have filed down shafts for good connection with pulley setscrews.
Should I file a groove in the ballscrew or is it to hard to mark? :)
Don't want it slipping in action later...
This week I'm hoping to motorize my first axis.. have motors, drivers, pulleys and a license to uccnc. Waiting to get an uc300 in the mail :D Chinese BOB will have to do for testing (because I have it)
Still missing pulley belts but that might solve itself aswell hehe
https://preview.ibb.co/gadfmk/20170827_202401.jpg
Generally the bits that have been machined (ie the ends) aren’t that hard as the case hardening is gone. I’ve never had any issue grinding a flat for a screw
Looking good have you drilled the plate for the spindle?
Yeah there are some holes prepared with m8 thread at the lower part of the plate.Quote:
Originally Posted by Clive S
Have to order the standard spindle clamp from ebay or maybe have one made ;)
The holes I made for the ballnut bracket are a little low on the plate.. don't really know what I was thinking when I drew that up :D
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Aah thanks!Quote:
Originally Posted by Zeeflyboy
Will try to fix that then!
Just have to calculate final pulley hight so that I file the right spot ;)
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Small update!
I think there is smooth action going on..
https://youtu.be/KQl2zc84KsM
How do I embed youtube links? :D
One more thing.. I repacked my stiff linear bearing. I was right! There was one ball in the wrong track!!
Now it's smooth so when I get time I'm gonna mount my y axis aswell :D
click the insert video link it's next to the insert picture then paste the youtube link.Quote:
Originally Posted by Nr1madman
Attachment 22783
Looking good there if it was me I push the gantry and it would fall off lol.