Posts

Hot Bed stickiness!

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Another issue I occasionally come across in a large 3d print is the print suddenly losing grip and being swept off the bed by a quick moving delta head.

There are a number of reasons why prints don't "stick".

The first is simply the head not being level or z-axis wrong height, usually after changing a nozzle or hot end.  Do this before any print.  Also watch out to make sure any bed change is even.  My delta is setup to do a "4 point" test, which means it checks the center, x, y and z axis. But if I've stuck a smaller blue 3m paper sticker (see later) the surface isn't even at the edges, so I allow a couple of mm extra for "give."

Blue paper is generally good for adherence on a bigger item, however, you need to cover the whole surface for a full print. Its expensive, so other options might be attractive.

Get a surface "sticker" for the hot bed.  Mine ended up wrecked after one of my axes slipped due to a loose screw, and the nozzle g…

Fixing a blocked PFTE Tube [3d printing for total and utter idiots]

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I recently built a clone Delta 3D printer, and after a couple of weeks of grief, fixed 95% of the problems (just a hot end fan that suddenly stopped running last week to fix), but ran into serious issues when my hot end became completely clogged.

So many learning issues here, but just a quick few.

Firstly, the fan problem probably caused this.  Because the "cold part" of the hot end basically feeds in the filament, it shouldn't get too hot. Because it is only less than 2mm, its very easy to melt filament from an uncooled hot end and block other parts.  The difficulty in unclogging this is that it is actually quite difficult to replicate overheating!  (This sounds surprising, but it takes some hours of use for the hot end even without fan, to reach sufficient heat to start melting filament.  My workaround for the moment (I suspect the issue is a mosfet blown or connection to pin loose on the motherboard) will be to attach a small device such as Arduino or Pi Zero to the f…

Hysterectomy & the Eighth Amendment

Some time ago I found out, as I had suspected, that a cure to a rake of health issues that have been bothering me for a few years would be a hysterectomy.  Unfortunately, due to the cause (what turned out to be a 5kg, 28cm rugby ball sized uterine fibroid) the options were limited.  According to my Gynaecologist, a fibroid (that he guessed was at least 20-25cm) had only a 50% chance of being shrunk by 50%, which would make anything less than an abdominal operation difficult, and at my age 45, the uterus had probably (correctly) already served its purpose (i.e. in my case, nothing).

Ireland is not a stone age country, and despite what you might hear in the press, women's opinions are not entirely ignored in the area of reproductive medicine.  I do respect, however, that in the area of pregnancy, the presence of the 8th amendment brings the constitution into the consulting room, where really, it has little useful presence.  In my youth I felt this was no big deal, in my older and ho…

Music education: stifling creativity or generating inclusion?

I read through Charlotte Gill's piece on the problem of learners of music struggling with notation and an appeal to perhaps try to find different ways to cater for those who just cannot get along with notation, thought, "yes, she has a point there", and moved on.Then a few weeks later, I spotted online that no fewer than 600 (600! WHEN do 600 people sign a letter to a newspaper) and saw some of the comments, and realised that Ms Gill had unwittingly released a rage amongst music educators.I was surprised to see this, because as somebody who worked in music education from the age of 18, until I was about 29, and saw at first hand the conflict between musical capability and notational literacy, I agreed that there was a problem that isn't just mitigated by "more money" or "more formal music education."

It also comes from my experience conducting choirs.It was a feature of the job that a very good singer would sometimes resolutely have given up on tr…

Fit Food from Dublin Meat Company: A quick review

I heard that Dublin Meat Company, a large butcher located a short walk from home was now doing healthy meals for those of us who like working out, and watch what we eat, so I decided to drop by and try out some of their ready to go meals.

Unlike the mass-produced rubbish sold in bulk under brands such as WeightGainers and UniFat, the Fit Foot range is carefully curated to suit the eating habits of active people.  In other words, its focused on good quality proteins, vegetables, healthy fats etc.  A number of other butchers have paired up with Butchers to help put together good quick meals to go for customers, who spend so much time in the gym there isn't a lot of time to cook.

From what I could see a lot of the range was already semi if not fully cooked, though the instructions mostly seemed to include both oven and microwave instructions.  With a full dish taking 25 minutes in the oven, this isn't too bad.  Date ranges were decent enough.  I bought at the weekend and everythi…

Women in tech: lessons from other sectors

I went along to a bunch of women entrepreneur events in the summer, when I was out of work, to both kill time, meet new people and potentially help my own career.(I pretty much had a lingering job offer that took a few weeks to formalise, which I ended up taking in any case, which I hope to be made permanent in come the new year).Anyway, in terms of the kinds of businesses I saw pushed, I was very surprised to find myself as absolutely the only woman in a technical field, in fact aside from a couple of marketers and an accountant, the ONLY woman to not be involved in a stereotypical woman's business.

The most common business was beauty, nobody, not a soul, represented sectors such as industrial, engineering, construction or even less "male" sectors such as law.There was one accountant.Just one.Nobody in IT aside from myself.While I am inclined to agree with much of what Cindy Gallop says about female start-ups in tech being denied funding, I'm also inclined to wonde…

Right2Water, Apollo House, Fake News & the coming socialist utopia

In the last few months no fewer than two multiple property owners have deigned to lecture me on the evils of homelessness in Irish society.As a person of no property, I was bemused by their hypocrisy, and explained, yes, of course, when property is the main measure of western society's personal wealth, and that wealth is deeply unevenly spread, of course, we shall have those who fall through the large gaps in the net, and find themselves without a roof over our head.

How anybody in their right mind thought Apollo House, an ugly office, long since disused , was ideal for housing many of the victims of the housing mess in Ireland, was beyond me.Also, how did they get in?How was electricity connected for squatters using a building they don't own?I spent a bit of time working on a business expansion project a few years ago and our biggest problem was gaining physical access to buildings, even after leases were signed.Somebody on the "inside" facilitated this for Apollo…