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Member postings for blowlamp

Here is a list of all the postings blowlamp has made in our forums. Click on a thread name to jump to the thread.

Thread: Mysterious Russian Emails
26/10/2021 13:20:22

Ignore the email, but take the hint to get some bitcoin while you can for under $63,000 US!


Thread: CAD program that can import PDF for scaling
24/10/2021 16:27:44
Posted by SillyOldDuffer on 24/10/2021 15:23:05:
Posted by blowlamp on 24/10/2021 14:13:09:

MoI will import a PDF vector file directly with all curves remaining editable.


I'm with Jeff Dayman on this because PDF has so many limitations. May help to understand that PDF is a container format for rendering documents, not a good way of recording technical drawings.

Much depends on how the PDF was produced in the first place. A 'text' PDF might contain character text which can easily be Word Processed, or a bitmap image of the same text that can't be edited at all.

If a technical drawing in a PDF was captured as a bitmap then a meaningful DXF can't be extracted from it.

If the technical drawing was captured in vector format, it is possible to create a DXF but as Jeff explains it's highly likely that drawing information will be missing and mangled. Internal drawing features like layers (containing construction lines), blocks, dimensions, snaps, scale, units, poly-lines, and splines etc have to be recreated manually.

However, I think it's worth trying a PDF conversion because it might save time, but don't expect much of it. Simple drawings convert well enough, but a complex drawing probably needs so much work it's better to do the whole job manually.

Most CAD packages don't read PDF files making it necessary to convert to DXF yourself. I think this is because PDF conversions are so haphazard that CAD vendors don't support it because disappointed users would flood their help desks with impossible to fix problems!

Nearly all 2D CAD packages can import drawings in any format as an image and store it on a separate layer so it can be traced over. Tracing allows the operator to correct for perspective and other errors. It also produces a genuine CAD file that converts cleanly to other formats without losing information, and rescaled as necessary.


I can assure you that if the PDF is a vector file, then the curves can be edited and scaled in MoI.


24/10/2021 14:13:09

MoI will import a PDF vector file directly with all curves remaining editable.




Edited By blowlamp on 24/10/2021 14:17:15

Thread: Cleaning glass.
16/10/2021 13:07:31

Slightly soapy water, a good, clean microfibre cloth and kitchen roll to dry.

It works for me, but do keep the water & cloth clean to prevent the dirt going back onto the glass.




Edited By blowlamp on 16/10/2021 13:07:57

Thread: Small bandsaw needed
08/10/2021 18:12:19

Is it the join in the blade that's causing the movement?

08/10/2021 16:50:46

This Cutmax was linked to on another thread. I think it's a rebadged Nebes 125mm cutting capacity saw like the one in my album.


Thread: Paint stripper
08/10/2021 13:14:48
Posted by Pete. on 07/10/2021 22:39:43:

Not paint stripper, but Bahco Tungsten Carbide scrapers are now my go to for paint removal on cast iron, the 625 is probably the most useful, you'll wonder how you got by without one when you use one.

I removed a few layers of paint from these castings with ease, it comes off in one scrape, as it comes off in dry chips it's probably one of the least messy methods of paint removal.

Large broaching press

The blurring around the last picture makes it look like a miniature version of the real thing.


07/10/2021 18:34:57

Wilko own brand paint stripper removed some epoxy two-part enamel very well for me. Put plenty on, leave it there longer than recommended and keep knudging it into the nooks & crannies.

It was far more effective than the premium brand I tried.


Thread: Unwanted Taper
04/10/2021 12:39:34

It should be straightforward to get this right if the headstock is separate from the bed.

Use your level across the bed at headstock & tailstock end and shim to read the same - this will verify that the bed is straight and untwisted. It's the starting point for everything else.

A test cut without tailstock support will show the taper that's causing problems for you, so it's necessary to loosen the headstock mounting bolts and carefully reposition it until its axis runs parallel with the bed. Very light cuts with a sharp tool will confirm the adjustment.

If the headstock & bed are in one piece then you have a harder problem to solve.


Thread: Clock Stand with a difference
02/10/2021 14:40:20

The cylindrical square should be your friend here.

Mount the square and the column/base close to one another on a good surface plate, in such a way that they can't easily move about - maybe add some weights. Then measure the distance between them at top & bottom, with gauge blocks or similar to determine how out of square things are. Then you can make your fine adjustments from there.


Thread: M6 thread locking/stiff screw
01/10/2021 17:14:07

I would imagine nail varnish would work too - just apply it as show in Michael's post above.


Thread: Bench top band saw
01/10/2021 13:31:58

The Cutmax looks like a re-badged Nebes, which is what I have and is a very good saw indeed.

The Nebes cuts consistantly, is well built and very quiet in use.

As it also has iron wheels with no rubber coating it can be use wet or dry too.


Thread: M6 thread locking/stiff screw
01/10/2021 10:30:50

I've used a spot or two of super glue on the screw with good results.

Just apply to the thread and let it harden before screwing it in.


Thread: What Material for this Application Please?
01/10/2021 10:21:52

Tricoya waterproof MDF would probably do the job. You could finish it in almost any way you like.


Thread: CNC Lathe Scratch Build
29/09/2021 11:32:48

There's a whole range of these CNC lathe controls here.

I notice UK ebay has a GSK980TDc available for a little over £1000 at the moment, but some of the buttons have Chinese characters - still worth a look, I think.


28/09/2021 15:53:03

Are you sure?

This is from the manual I downloaded.


28/09/2021 14:01:17

Get the GSK980TDc manual here.

28/09/2021 12:46:39

Surely this would do it? smiley

Edited By blowlamp on 28/09/2021 12:46:59

28/09/2021 10:31:35
Posted by John Haine on 28/09/2021 10:02:27:


Could this open-source project be useful?

That looks interesting, John.

There's also a 'Polarizing Converter' that may be of some use to Joe here. There is no 'C' axis label available, but if the basic conversion is OK, then it might be a simple Search & Replace in Notepad.


27/09/2021 14:28:16

It looks like Centroid make a C-Axis controller, but at a price. You'd be looking at around $2300 for the board & software.



Edited By blowlamp on 27/09/2021 14:29:31

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