David

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David
@3D_Printing_Chi
Member since

May 2015

4 days 11 hours ago - Commented on 3d Scanning Service

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Sure you can scan anything and it will look good on screen. Just don't expect to 3D print it and have it come out like the original. You need to draw it in CAD software for that.

4 days 11 hours ago - Commented on 3d Scanning Service

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I doesn't matter if you get a good scan and spend hours cleaning it up, as Cokreeatea said if you want a model that is reproducible, you're going to have to redraw it in CAD software anyway. Unless it's only for viewing on screen, no scan is going to be able to be 3D printed as clean as the original. This isn't Star Trek.

4 days 14 hours ago - Commented on 3d Scanning Service

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It will be nearly impossible to get a 3D scan that is clean and accurate enough to reproduce the part accurately if that's what you're trying to do. I doubt that you will be happy with a scan that someone offers to do for free or $15. The type of scan necessary to to get something 100% accurate for 3D printing would run in the $500 range. It is usually far more cost effective and the results are way cleaner and better, to re-draw the part in CAD software.

I have purchased and returned 3 different 3D scanners at this point, in the cost range from $1000 - $2000, because they just don't pick up the features as accurately and cleanly as is required for 3D printing. If all you need is a scan to view on your computer screen, go ahead and get a free scan, but if you want to reproduce the part as a 3D print, I would recommend you have a designer draw it in a CAD program. I have several designers who can do that if you're interested.

4 days 14 hours ago - Commented on 3D Printing at Nano scale

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So the entire part is only 100 microns across? That's an average single layer height for most of the 3D printers you will find on here. You would need a microscope just to see that print. Some of the highest resolution 3D printers you will find are resin, SLA printers. They have a feature size of about 150 microns. That entire print isn't much larger than the dot at the end of this sentence. Why would you need to print something so microscopic? How would anyone even be able to see it, much less handle it?

1 week 3 days ago - Commented on How to offer a discount?

3 months 14 hours ago - Commented on How often do the metrics update?

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My metrics have been updating nicely. After completing a number of orders in the past 3 weeks, my Hub Rating has gone up. Three more reviews and I bump my lowest review, a 4, and it should go up even more.

 

My Weighted Completion Rate has gone up as well. Just since yesterday my Weighted Completion Rate moved up 2 percentage points, so I must have bumped something negative from the calculation. Nice, this gives me some breathing room.

 

The repeat customer reviews are definitely being counted in the stats too. 3D Hubs likes to see repeat customers. They have a "repeat customer retention rate" that doesn't show up in on your Dashboard, but does play a role in your raking when a customer places a new order.

 

All my metrics are in the Green now! I'm feeling more optimistic about things on 3D Hubs again.

3 months 2 days ago - Commented on Raise3D N2+ Dual Extruder

3 months 1 week ago - Commented on Unpaid order Archived — Completion Rate drops 1%

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eBay abandoned including customer reviews and order cancellations in the seller evaluation last year. The seller cannot control these metrics: customer reviews are merely opinions and order cancellations and returns are a normal part of doing business. eBay now only includes performance metrics that the seller can control, such as shipping time, tracking accuracy, and keeping items in stock.

 

I hope that 3D Hubs will reevaluate their performance metrics and follow eBay's lead on rating the Hubs based on merit, not customer opinions and other things outside of our control, such as unpaid orders. Response time, meeting deadlines, and timely tracking are metrics that are based on performance that the Hub can control.

3 months 1 week ago - Commented on Unpaid order Archived — Completion Rate drops 1%

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Why does it have negative impact on my ranking, if it was the customer's failure to complete payment? I did accept the order and was standing by ready to print it. The customer dropped the ball, not me. That is totally beyond my control, so why should my ranking be downgraded for that reason?

3 months 1 week ago - Posted a new Thread

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