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  1. daxman1

    Plus Nuts

    OK, here is something I have never come across before so I'm hoping someone on here has. There areas on our aircraft that we use something called a "Plus Nut". The part number I'm currently working with is S8P150. I have never worked with them in the past so I have no frame of reference on them...
  2. daxman1

    Fasteners in Composite Materials

    If I may I would like to continue on with metallic vs composite fastener issues. While I worked on the C-17 we preferred 2.5D for ED but would buy down to 1.5D if it was not in a high stress area. Other companies and aircraft I worked on were looking for 2.0D but again would buy down to 1.5D if...
  3. daxman1

    Fasteners in Composite Materials

    I would like to expand on the use of fasteners in composite material. While working with metallic parts a knife edge was considered a countersink which penetrates more than 67% of material thickness at Boeing and slightly higher at other companies I have worked for. With that in mind is there a...
  4. daxman1

    Al. vs Steel gouge repair

    For composites with minor nicks, gouges, scrapes, after NDI for the most part a "Blend" repair consists filling the defect (resin, chopped glass, EA9394 or others...)and smooth using 180-grit, 220-grit abrasive paper or scotchbrite equivalent. Do you have other information for these cases?
  5. daxman1

    Al. vs Steel gouge repair

    I think this will be a simple one that I should already know but I don't. Most of the time we work with aluminum (2024, 6061, 7075...) and for nicks, gouges, scrapes...the disposition is to smooth and blend unless the discrepancy is greater than 10% of the thickness of the material then it is...
  6. daxman1

    Fasteners in Composite Materials

    It looks like I'm getting back into major composite builds again and I have a few questions I'm hoping someone on this site can answer. The last time I worked composites most of the time we used what we called "chicken" rivets to hold something into place along with the adhesive bond. As I...
  7. daxman1

    Laser Cutting

    Thanks guys, that was the information I was looking for. Dennis
  8. daxman1

    Laser Cutting

    I have been doing some research on laser cutting and although it is a great option in many cases it may not work for aluminum. We are looking at sending out some aluminum parts to be formed. The parts are approximately 2' by 2' made from 2024-T0 material .032 thick. The material is currently...
  9. daxman1

    Repair Cad brushing

    WKT you continue to amaze me. Thanks.
  10. daxman1

    Repair Cad brushing

    Once again thank you for all the information. I read the finishing information and I find it hard to believe that Aerospace is going away from Cad plating. Is this true or am I reading something into it I shouldn't.
  11. daxman1

    Repair Cad brushing

    On average how much does Cad plating add to small aircraft parts dimensions? .001, .002, .003...
  12. daxman1

    Likely causes of porosity in composite parts that use an autoclave

    Good Morning, I have been working on and off with composites for some time now but have mainly been involved with repairing parts, not so much the root causes analyses. Can someone tell me the most likely causes of porosity in composite parts that use an autoclave? How about de-bonding issues...
  13. daxman1

    Repair Cad brushing

    Here is what is at issue. We have some smaller steel parts that get scratches, nicks, gouges... The repair is to smooth and blend at 20:1 which removes the CAD plating in the discrepant area. This is a small company so sending these parts to strip and reapply CAD is an issue. I have been doing...
  14. daxman1

    Repair Cad brushing

    Is there a touch up kit on the market for small CAD touch up requirements?
  15. daxman1

    Repair Cad brushing

    As always, WK, you are amazing!
  16. daxman1

    Repair Cad brushing

    Good Morning I'm currently working for a small helicopter company with lots of steel parts that require cad plating. During the build cycle some of this plating is removed through nicks, scrapes or just carelessness. At a previous company I worked we had a "brush" process for small repairs...

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