Chris

Chris's picture
Chris
@3DPrintandStuff
Member since

March 2015

3
Posts
#538
129
Comments
#45
45
Upvotes
#91
Hub Badges
Students program
Printer Guide Reviewer 2016
3D Printing Day 2015 Participant
Printer Guide Reviewer 2017

View my Hub
About

I'm a maker/engineer. I been tuning, adjusting, fixing 3D printers since Nov 2013. I'm committed to using the best materials and getting the best print result for the design taken on.

Followed tags

1 month 2 days ago - Commented on New user Flash Forge Creator Pro needs help with setting

+1
0
-1

Looks like there are a few issues with this print.
Make one setting change and reprint the the same model, makes troubleshooting easier.
Looks like it over extruding the filament and oozing to prevent oozing turn down temp by 5 degrees.
Check extrusion multiplier settings, should be 0.9 or 1.0. Also check your steps per mm value by printing a square of a known size I.E. 100mm x 100mm x 3mm, mark the X and Y Axis upon the print and measure each axis and have the reading within
+- 0.5mm of the 100. If not your steps values need to be adjusted, use this formula

new_step_per_mm = (expected move length/Actual move length) x times old_step_value

Enter the result into your firmware and power cycle your printer to make the change. then reprint the square and the measurements should be closer to 100.
To measure the steps on the extruder measure up from the housing and make a mark at 100mm then extrude 100mm of filament and measure where the mark is now in relation to 100, if needed adjust the steps using the formula before.
More tips on print quality here https://www.simplify3d.com/support/print-quality-troubleshooting/

Regarding cooling the fan only needs to at 100% when doing bridges or overhangs, 50-60% should be fine, if the edges curl up turn off the fan as it's over cooling the layers.

If layers are not sticking together well increase temp by 5 degrees

1 month 2 days ago - Commented on New user Flash Forge Creator Pro needs help with setting

+1
0
-1

Temp setting for the PLA might be between 180-200 degrees C
Print bed temp 60 or less, layer height 0.2mm
default print speed of 50mm/sec, cooling fan on after 1st layer @ 55%
These settings should give you a workable print

2 months 4 days ago - Commented on Bed adhesion problem - Creator Pro

+1
0
-1

First of all I would fix all mechanical hardware problems as the nozzle needs to run parallel to the print bed within 0.1mm to 0.5mm.
A bed temp of 50 is a little low, 60 would be better

2 months 6 days ago - Commented on FlashForge Creator Pro bug?

+1
0
-1

My first experience when getting the flashfordge creator pro to work with duel extrusion, was that I found that Flash print didn't support the use of both extruders.

As the slicer needs two models, one is the bit you wish to print in PVA and the other one the PLA bits.

The latest version of flash print is 3.22.0 you should be able to check for updates within your current version and download the zipped file and run the executable which will update your current version of flash print to the latest. It's also possible to update the firmware upon the printer via flash print by connecting the USB lead and selecting update firmware from the tools menu.
In the latest version of flash print it does give the option to select which nozzle does which part of the print, so it looks like it should work. Not tried it though as I bought Simplify 3D which produces the correct file needed for the printer and supports duel extrusion.

2 months 6 days ago - Commented on Having some newby semi-not great prints

+1
0
-1

Is the cooling fan running ? If so turn it off
I have found that corners lifting are due to over cooling the layer, causing it to curl up
there is also this guide by Simplify 3D on print quality https://www.simplify3d.com/support/print-quality-troubleshooting/#
Make one change then print again, they also be some over-extrusion

I would also use a raft or a skirt/brim with the offset from the part set to zero, that should help keep it stuck on the bed.

2 months 2 weeks ago - Commented on PLA is completely stuck.

+1
0
-1

As this was posted 2 days ago, you might have sorted it out.
I sometimes have this problem when I unload PLA from my extruder, it gets stuck.
So I extrude it a bit more, then quickly retract it and find it comes out.
It could be caused by heat creep which is putting a blob on the end of filament.

2 months 3 weeks ago - Commented on Add print time as pricing option... We do NEED this

+1
0
-1

So you would walk/go on-line into/onto a filament store/site and ask for 961.5cm^3 of filament, rather than a Kilo?

Good filament diameter is 1.75mm -+ 0.05mm over it's length so not likely to make any notable difference to it's length. It also depends how much the manufacturer has wound on to a reel to get a kilo. As you have stated before you can add 5% to the orders to cover for any problems, which I do and having a metre costing allows for power costs and time costs.
Don't get upset because I prefer to cost by the metre or the weight, it's just a shame that 3D Hubs can't provide the data from the uploaded file. IMHO volume pricing has always been a expensive way to pay for a printed item. It makes running a hub profitable if you have people willing and able to paid for the service.

Formfutura is nice filament to use, shipping it from Europe to the US would increase it's cost due to import duty.

2 months 3 weeks ago - Commented on Add print time as pricing option... We do NEED this

+1
0
-1

I have lost orders due to people uploading multiple items, even based of the suggested price per cm^3 by 3D Hubs and not wanting to progress the order. I'm not told why or get feedback on these orders

I would prefer 3DHubs priced by the metre rather than volume. If was possible to get the weight of material used in design of an uploaded file that would be very cool and straight forward to check/cover the costs and if it's worth printing. As someone else mentioned when using FDM printing it's best to use weight. This method work well when in a hack space, as you can also weigh the fails and prints at the end of print.
Giving a simple price of 13p per gram for provided 3D Printing services.

I have also printed 3D Hubs orders at a loss, and one order took 3 weeks to complete, with me putting in 12hr plus shifts, don't think the total order cost would have paid the labour costs, as I wasn't able to add the time, due to volume cost pushing the price into 3 figures. Also no idea how long it would take to print that many items.

951.5 cm^3 means what??? when ordering filament from the web. It's sold by weight in kilos not volume
Different materials don't have the same density (aka volume) I print with a range from 0.85g /cm^3 to 3.2g/cm^3
Moldlay is 0.85g/cm^3 at a cost of £57.60 sold in 750g reels, cheap PLA from China can be as low a $7 per kilo dependant upon amount bought.
Then what's the cost when it won't print correctly and clog the nozzle, causing downtime and delays upon deliveries of printed items.

2 months 3 weeks ago - Commented on Add print time as pricing option... We do NEED this

+1
0
-1

Volume is one type of measurement which has the unit cm (cubed) ^3
A 10mm x 10mm x 10mm cube = 1cm^3 and would weigh 1.04g and use 361.7mm of filament.
Also volume is amount of space it takes up, for example 2kg of PLA takes a large amount of volume inside a box, so can be known to have a large volume to weight ratio. 3D Hubs shows a volume for the design based upon a set slicing infill percentage of I believe 30%. They might have changed the way it's worked out, I have had many orders but I find if I change the infill to help the design print well, the amount of filament used goes up. If you load the downloaded model into netfabb basic it reports the volume of design higher than the figure stated by 3D Hubs, as lowering the infill saves filament.
Also it's hard to work exactly how much filament is needed to print the design based upon it's volume.

Metres is a length measurement, just shown as cm,mm, m

Filament is sold by Weight which won't convert well/easily into volume. There is formula that will workout for 1.75mm you get ~330m for a 1Kg of PLA (1.24g/cm3) Most slicers will state filament used in a measurement rather than volume CM^3
It's ~£25 for a kg so ~330m divide that by 25.00 = 0.07p/metre
to Print a block 196 x 63 x 145 has a volume of 3025.47cm^3 uses 382.99 meters

Uploaded the block to hubs gave a figure of £201.37 for PLA, which means that the volume workout by Simplify3D shows volume as a solid (100%)

3D hubs cost would be 3025.47 x 0.40p = £1,210.18 or 382.99 x 0.07p = £26.80 based upon a 30% infill,
£26.80 is just the material cost, which allows for extras and still be under the hubs price of £201.37

Large volume designs can become expensive but be cheaper if were costed by the metre.

2 months 3 weeks ago - Commented on Add print time as pricing option... We do NEED this

+1
0
-1

When costing my prints outside of 3DHubs.
I always price by the meters of filament used, as it allows you add electrical cost and any other needed costs without making the total cost too high.
When using volume based pricing, you sometimes get fresh air when printing tall and thin and it's more than the customer wishes to spend.

Pages