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by Atso
Fri Nov 25, 2016 10:13 am
Forum: Troubleshooting
Topic: Lines
Replies: 9
Views: 2790

Re: Lines

The spacing looks very much like the pitch on the z-axis lead screw. I've had this before and it is often accompanied by an audible tick every revolution when you use the toggle switch to move the build plate up and sometimes down, as well. On my self assembled v1.1 machine, I resolved the problem b...
by Atso
Sat Nov 19, 2016 9:57 am
Forum: Troubleshooting
Topic: Where did the edge go?
Replies: 18
Views: 4029

Re: Where did the edge go?

Good call, Robert! Connected up my laptop and problem resolved. Since I re-built the software in the PC on a re-formatted hard drive, I think that I'm looking at a dying graphics card. Thanks very much for your help.
by Atso
Sat Nov 19, 2016 5:42 am
Forum: Troubleshooting
Topic: Where did the edge go?
Replies: 18
Views: 4029

Re: Where did the edge go?

Not yet, Robert. It has always worked fine but then, suddenly, after a break of a week it's done this. I've even done a complete re-build of the computer software but it's made no difference. I'll try my laptop later and report back.
by Atso
Fri Nov 18, 2016 10:47 am
Forum: Troubleshooting
Topic: Where did the edge go?
Replies: 18
Views: 4029

Re: Where did the edge go?

This is a 1.1 machine and I have the correct machine settings selected. In fact, if I select a 1.2 machine, it won't let me select the projector (yes, I have made that mistake before!)
by Atso
Fri Nov 18, 2016 10:19 am
Forum: Troubleshooting
Topic: Where did the edge go?
Replies: 18
Views: 4029

Re: Where did the edge go?

I have exactly the same issue with my 1.1 machine. I've tried pressing the auto button on the projector but to no avail. I've changed from 50u to 70u but still get the cut off. I've even done a clean re-installation of Windows 7 and the graphics drivers but I am still losing the arrow. A calibration...
by Atso
Wed Oct 05, 2016 10:10 am
Forum: Official News and Updates
Topic: v1.0 & v1.1 "Booster Kit"
Replies: 21
Views: 5533

Re: v1.0 & v1.1 "Booster Kit"

A most welcome addition! Are the components of the kit available separately? I upgraded the bearings long ago as, I suspect, did a good many other V1.1 users so don't need those bits.
by Atso
Sun Jan 31, 2016 3:02 pm
Forum: Troubleshooting
Topic: Print time
Replies: 11
Views: 2160

Re: Print time

Thanks for the clarification, Robert. I was, of course, referring to the partial cycles. I never used the now defunct variable vat placement because of the risk to quality of printing layers in different parts of the vat.
by Atso
Sun Jan 31, 2016 10:48 am
Forum: Troubleshooting
Topic: Print time
Replies: 11
Views: 2160

Re: Print time

I also have a V1.1 printer. I found that when the software first introduced the variable sweep of the vat (1.7, I think) that the estimated print time was significantly over estimated (I also do long prints of several hours. Now that we have 1.8.3 I find that the initial estimate is also under-estim...
by Atso
Sat Dec 26, 2015 1:58 am
Forum: Troubleshooting
Topic: 1.1 Lamp Replaced and Can't Print Now
Replies: 52
Views: 7834

Re: 1.1 Lamp Replaced and Can't Print Now

Do not remove the square glass filter in front of the lamp! It seems to be a heat shield. I removed it from my new bulb and had all sorts of issues with the colour wheel etc and an apparent need to rapidly increase the MSM. I thought I might need a new projector but when I replaced the filter the pr...
by Atso
Sun Jun 21, 2015 4:06 am
Forum: Operation
Topic: Print duration diff after start of print
Replies: 3
Views: 1176

Re: Print duration diff after start of print

I've been doing long duration prints at 50 x-y on a 1.1 machine and reckon that I save 1/3 of the initial forecast time.

Robert, I agree with your assessment. The best savings will be had for items biased to the left.
by Atso
Thu May 28, 2015 11:07 am
Forum: Operation
Topic: Calibration Pattern - Balance adjustement - printer V1.1 - software version V1.8.0
Replies: 10
Views: 2960

Re: Calibration Pattern - Balance adjustement - printer V1.1 - software version V1.8.0

I had the same issue with the bottom left corner when I was using an MSM of 1.2. I can't say that I've seen posts saying that MSM should be limited to 1.5 but, as I said, increasing to 3.5 has worked for me, although I am still about .05mm under size on the 2mm diameter. Variation in diameter is abo...
by Atso
Wed May 27, 2015 8:31 am
Forum: Operation
Topic: Calibration Pattern - Balance adjustement - printer V1.1 - software version V1.8.0
Replies: 10
Views: 2960

Re: Calibration Pattern - Balance adjustement - printer V1.1 - software version V1.8.0

I have exactly the same equipment as you, Barracuda, but I am printing at 50xy and 37.5z with black resin. I saw similar effects to you on the calibration piece but they improved as I increased the MSM. You probably need an MSM of 2.5 or more. I'm running at 3.5 at the moment and getting good result...
by Atso
Wed Feb 04, 2015 2:36 pm
Forum: General
Topic: Best plac to buy resins in the UK
Replies: 1
Views: 1205

Re: Best plac to buy resins in the UK

I'm in the UK and use SpotA-HT, which I buy direct from Spain. I've always found this to be cost effective and quick. It's certainly cheaper than any resin suppliers that I've found in the UK!
by Atso
Thu Oct 02, 2014 7:38 am
Forum: Troubleshooting
Topic: wat is this guys? help needed!
Replies: 13
Views: 2506

wat is this guys? help needed!

Is there a clue in the new PDMS? This looks like a fall off in PDMS level towards the waterfall. I solved this initially with downward pressure during the crucial exposure of the first couple of base layers but then with the better solution of using a cliff edge. I assume that you have checked the c...
by Atso
Sun Aug 24, 2014 7:57 am
Forum: Tips & Tricks
Topic: Big models, big trouble
Replies: 46
Views: 7614

Big models, big trouble

Hey, that's looking good! It looks like the peel off is at the waterfall end. This could be caused by a very slight gradient in the PDMS at this end. I solved this by using a cliff edge as I was curing the PDMS at room temperature. You probably don't want to increase the number of attach layers as t...
by Atso
Wed Aug 20, 2014 4:44 am
Forum: Tips & Tricks
Topic: Big models, big trouble
Replies: 46
Views: 7614

Big models, big trouble

I don't think that it really matters where you start from. I usually set it so that the highest point of the build is at the sweeper end. The reason is that the support structure on these models uses a lot of resin and so by the end of the print it can take virtually all of the settle time to reach ...
by Atso
Tue Aug 19, 2014 5:00 am
Forum: Tips & Tricks
Topic: Big models, big trouble
Replies: 46
Views: 7614

Big models, big trouble

I've been working with large models since getting my B9 Creator back in February of this year. I have read this forum at length and made the occasional contribution when I think that I've had something of value to add. I am finally getting consistent results that are approaching the quality that I k...
by Atso
Wed Jul 30, 2014 7:54 am
Forum: Official News and Updates
Topic: Upgrade kit from 1.1 to 1.2
Replies: 46
Views: 18578

Upgrade kit from 1.1 to 1.2

When can I place an order for the new vat? My acrylic one is now well past its best and a replacement is desperately needed.
by Atso
Fri May 16, 2014 8:33 am
Forum: General
Topic: Removing cured resin from the Vat
Replies: 4
Views: 1368

Removing cured resin from the Vat

I had a similar problem when my first attempt to replace a PDMS tore. The B9 jammed and aborted so I didn't have masses of cured resin on the acrylic window but it was still very difficult to remove and left scratches and a fine residue. I used a cream cleaner to try and cleanse the acrylic window b...
by Atso
Wed May 14, 2014 7:37 am
Forum: General Discussion
Topic: Plexiglass Barrier for a flat PDMS and smooth edge
Replies: 52
Views: 12169

Plexiglass Barrier for a flat PDMS and smooth edge

This looks like a great idea! I also cure at room temperature over 48 hours so as to ensure level and have reported in another thread on the problems that this gave me. As I reported there, the problem was solved by adopting the dam and cliff edge approach. This barrier technique solves the taper pr...

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