This is what the laser shop sent me...
Close
Login to Your Account
Page 1 of 3 123 LastLast
Results 1 to 20 of 43
  1. #1
    Join Date
    Apr 2019
    Country
    UNITED STATES
    State/Province
    Georgia
    Posts
    24
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    25

    Default This is what the laser shop sent me...

    Sent some steel work out to a laser shop. Thought I'd get everyone's thoughts on what I got in from them. It's a smaller shop and I know one of the guys there really well. I didn't specify that they'd break the edge or finish the part. I just trusted my bud's shop to take care of me. They told me I'd have to tumble them some. I told them we have two tumblers so we can handle it, but I wasn't expecting to get something so rough. I've never had a fiber laser cut part come back looking anything like this. I've had some burr and dross, but this is pretty nasty. It's a 6kw laser and 1/4" steel. I'm thinking they don't have the thing set right.

    img_20210204_140625978.jpgimg_20210204_140519233_mp.jpg

  2. #2
    Join Date
    Mar 2017
    Country
    LATVIA
    Posts
    768
    Post Thanks / Like
    Likes (Given)
    212
    Likes (Received)
    447

    Default

    had something like this with an alloy steel sheet, composition similar to 4140, 2mm thick, it had some mill scale with rust preventative on it and the parts looked similar to yours, they were very apologetic about the result, they always supplied me with near perfect looking parts from either mild or stainless, regardless of thickness, from 1 to 25mm (mild steel)

    I cleaned up the next sheet before bringing it to them to be cut, degreased and lightly sanded the scale, and the result was much better, still wasn't near perfect as mild or stainless, but much better

  3. #3
    Join Date
    Jul 2006
    Location
    Hillsboro, New Hampshire
    Posts
    12,494
    Post Thanks / Like
    Likes (Given)
    2856
    Likes (Received)
    8685

    Default

    Those are terrible, unacceptable. You can't "tumble" that away. Even using a Timesaver, it could be hard on the belt.

    I'd either talk to your buddy, or chalk it up to experience and get them done elsewhere (with a guarantee of edge quality).

  4. Likes doug8cat, Strostkovy, Joe Miranda liked this post
  5. #4
    Join Date
    Jan 2014
    Location
    GA, USA
    Posts
    26
    Post Thanks / Like
    Likes (Given)
    1
    Likes (Received)
    6

    Default

    Cutting 1/4" steel with nitrogen can do that if you don't have something set right. Which it appears they don't. It being HR will play into that some. We had issues cutting 1/4" with oxygen for some reason or the other, I swapped over to use nitrogen. Once everything got dialed in it cuts great. That said we try to use only HRPO cuts cleaner does leave a slight burr but nothing like this. Like Milland said thats going to be hard on a timesaver belt. Paint scraper and a hammer you can get under the burr and can pop off the burr. Sometimes.

  6. #5
    Join Date
    Oct 2005
    Country
    UNITED STATES
    State/Province
    Pennsylvania
    Posts
    21,160
    Post Thanks / Like

    Default

    On my oxy cnc table I get it like that sometimes, I keep a 4" wide masonry chisel
    handy.
    It has enough weight, you slide the slag "off", not the other direction.
    The 4" wide makes it easy to find the last bits still hanging.

    https://www.homedepot.com/p/Dasco-Pr...-100507480-_-N

  7. Likes DrHook, gbent, neilho, Toolmaker51 liked this post
  8. #6
    Join Date
    Apr 2005
    Location
    Brandon, MS
    Posts
    878
    Post Thanks / Like
    Likes (Given)
    134
    Likes (Received)
    201

    Default

    That's pretty bad indeed. 1/4" should be no problem for a 6 kw laser. Something is definitely "off".

    A frank conversation needs to be had and expectations need to be understood before the next order is placed. Otherwise, take your business elsewhere.

    My laser guy only has a 4 kw laser and there's not even a discernable burr even on 1/4" material. I'm not sure what type of laser he has though.

  9. Likes digger doug liked this post
  10. #7
    Join Date
    Oct 2008
    Location
    Central Ohio, USA
    Posts
    2,045
    Post Thanks / Like
    Likes (Given)
    922
    Likes (Received)
    595

    Default

    Wow, my Hypertherm 65 on my cheap plasma table looks better than that.

  11. Likes Joe Miranda liked this post
  12. #8
    Join Date
    Oct 2009
    Location
    Oregon
    Posts
    5,905
    Post Thanks / Like
    Likes (Given)
    6401
    Likes (Received)
    3273

    Default

    That is not acceptable.

    I get parts like every now and then. I happily have them redo them over and over until they are acceptable.

    I have noticed the uglier the parts are the more elaborate the wrapping/palletizing often is. Like the operators know and are trying to hide it.

    I have even gone as far as to note "Not to be cut from flaking rust pitted shit" on my PO's to one vendor.

  13. Likes Yan Wo, Winterfalke liked this post
  14. #9
    Join Date
    Feb 2014
    Location
    Cartersville, Ga
    Posts
    427
    Post Thanks / Like
    Likes (Given)
    155
    Likes (Received)
    257

    Default

    This is 1/4" from my vendor, if you need to see what you should be getting.

    img_20210205_130225893.jpg

    img_20210205_130237883.jpg

  15. Likes rcoope, michiganbuck, bryan_machine liked this post
  16. #10
    Join Date
    Feb 2016
    Country
    UNITED STATES
    State/Province
    Washington
    Posts
    265
    Post Thanks / Like
    Likes (Given)
    514
    Likes (Received)
    148

    Default

    I agree with everybody else. That is horrendous. The 1/4" thick parts I've had laser cut are much closer to what Fish On posted.

  17. #11
    Join Date
    Mar 2005
    Location
    Kansas
    Posts
    8,506
    Post Thanks / Like
    Likes (Given)
    585
    Likes (Received)
    4250

    Default

    Quote Originally Posted by digger doug View Post
    On my oxy cnc table I get it like that sometimes, I keep a 4" wide masonry chisel
    handy.
    It has enough weight, you slide the slag "off", not the other direction.
    The 4" wide makes it easy to find the last bits still hanging.

    https://www.homedepot.com/p/Dasco-Pr...-100507480-_-N
    I second doug's masonry chisel. Sharpen one sided like a wood chisel. Add a longer solid handle if more weight is needed. Works great for removing weld spatter as well.

    But no, you shouldn't have parts that look anything like that.

  18. #12
    Join Date
    Sep 2015
    Country
    UNITED STATES
    State/Province
    Ohio
    Posts
    1,683
    Post Thanks / Like
    Likes (Given)
    1123
    Likes (Received)
    1746

    Default

    I would never send something that looked like that to a customer.
    Especially if I wanted to keep them as a customer.

  19. Likes Mike1974, Garwood, Joe Miranda liked this post
  20. #13
    Join Date
    Oct 2010
    Country
    UNITED STATES
    State/Province
    Oregon
    Posts
    5,639
    Post Thanks / Like
    Likes (Given)
    5441
    Likes (Received)
    2123

    Default

    The last welding class I took at the local community college, that would have been totally unacceptable for hand-cutting with an oxy-acetylene torch. For a CNC fiber laser? No way!

  21. Likes Joe Miranda liked this post
  22. #14
    Join Date
    Feb 2011
    Country
    CANADA
    State/Province
    British Columbia
    Posts
    170
    Post Thanks / Like
    Likes (Given)
    18
    Likes (Received)
    41

    Default

    I've had the same results as Fish On - the laser shop we sub out to hates us because our orders are either really small, or the involve a million piercings, but the results are always similar to the photos Fish On posted. I also second Ohio Mike's comments about that being much worse than plasma, and I only have a Hyperther 45XP on the cheapest CNC table in the market.
    Here are some photos of why they hate us:
    image1.jpg20180810_144407.jpgbar-front.jpg

  23. #15
    Join Date
    Nov 2014
    Country
    UNITED STATES
    State/Province
    Florida
    Posts
    6,154
    Post Thanks / Like
    Likes (Given)
    2439
    Likes (Received)
    3060

    Default

    Quote Originally Posted by Booze Daily View Post
    I would never send something that looked like that to a customer.
    Especially if I wanted to keep them as a customer.
    Ya!! How could anyone in good conscious send that out and expect to be paid?

    edit: even as 'just an employee" I would be embarassed...

  24. #16
    Join Date
    Apr 2019
    Country
    UNITED STATES
    State/Province
    Georgia
    Posts
    24
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    25

    Default

    Quote Originally Posted by Mike1974 View Post
    Ya!! How could anyone in good conscious send that out and expect to be paid?

    edit: even as 'just an employee" I would be embarassed...
    Thanks for the replies. I've been pretty straightforward with the shop that this batch of parts is no acceptable at all. The owner asserted that he thought I was trying to save money on some parts and his understanding was that these parts would be acceptable. He has taken strides to improve the quality of the cut. He still seems to think these parts were okay. I sent him the link to this post tp see if it changes his mind.

  25. #17
    Join Date
    Aug 2007
    Country
    UNITED STATES
    State/Province
    Idaho
    Posts
    2,375
    Post Thanks / Like
    Likes (Given)
    988
    Likes (Received)
    1237

    Default

    We were buying mirror glass from a big waterjet shop in sacramento ca for 10 years with a less than 1% rejection rate, we just tossed them and never said anything, about 3 years ago all of the sudden we had a 50% rejection rate, scratched glass, chipped edges, poor packaging, after three batches we decided it would be cheaper to buy a protomax waterjet. The quality of work done out of house has become more trouble than it is worth. I have to think this will affect their bottom line but folks are being forced to hire better than nothing employees in many sectors but having the owner think those are acceptable is a whole nother thing all together. There may be a protomax in your future too.

  26. Likes bryan_machine liked this post
  27. #18
    Join Date
    Oct 2017
    Country
    UNITED STATES
    State/Province
    California
    Posts
    1,242
    Post Thanks / Like
    Likes (Given)
    379
    Likes (Received)
    425

    Default

    We state the part quantities are +-5% or whatever so that we can nest extra if they fit well or throw away ones that turn out bad.

    We often include ones that need work for free, because why not. It doesn't cut into our margins and the customers like it.

    But any part that bad would just be tossed into the scrap bin before a customer ever had a chance to see it.

  28. Likes Steven-Canada, bryan_machine liked this post
  29. #19
    Join Date
    Sep 2010
    Location
    Vancouver Canada
    Posts
    1,029
    Post Thanks / Like
    Likes (Given)
    791
    Likes (Received)
    409

    Default

    I spent a lovely week surfing in in Tofino BC last summer. Tofino accommodations are challenging and everyone has stories about deals they've had, good places and bad places etc. Early one mooring we saw a guy who was actually sleeping on the beach but inside his surf board bag, one of those padded ones with the sliver outside so they don't overheat in the sun. But they're always damp inside and at risk of mildew. So this immediately set a new low standard of Tofino accommodations for all others to be compared to, "well I was in a three person tent with four guys from Quebec and it was raining but at least I wasn't sleeping in my board bag!". Anyway, thanks to this thread we have now seen the laser cutting equivalent of sleeping in your board bag.

  30. Likes sfriedberg, Garwood liked this post
  31. #20
    Join Date
    Dec 2012
    Location
    Se Ma USA
    Posts
    2,101
    Post Thanks / Like
    Likes (Given)
    172
    Likes (Received)
    1122

    Default

    I have a measly 1000 watt fiber laser. I also have a scrap dumpster for stuff like that. Talk to operator or walk.


Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •