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Member postings for Dick H

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

Thread: Optimum products?
18/10/2020 19:57:14

I´ve got one of their bandsaws, it works and you can get spares here. Else it looks like many other offerings. The first think it did was to eat the rubber tyres that drove the blade. Dick.

Thread: Troubleshooting Instructions
18/10/2020 19:52:27

Press any key to continue. Where´s the "Any Key"?

If is was you I wouldn´t have started from here

Thread: Proxxon collet size?
23/08/2020 16:12:56

Just to give the pot a stir, I looked at a German Proxxon dealer´s site and they sell a set of ER20 collets for the FF400 for machines with a serial number beyond 401-10910 manufactured after 05/ 2012. Before then I think they used the Proxxon style collets with slits from the front face. Around 2012 the ER20 collets became the norm, hence the confusion. See


22/08/2020 22:29:51

Look at the annular slot that locks into the tightening nut , then you understand how it works.

22/08/2020 22:06:31

I think the Proxxon collets are a special design, you have to engage the collet in the nut before you tighten it in the spindle. Conversely if it doesn´t disengage on loosening you have to jiggle it a bit until you can remove it from the tightening nut. I hope this is clear but I don´t know the correct terms to describe this. I have a Proxxon FF230 (notmy choice) and I know if the collet is not properly engaged it will move in use.

Thread: What Did You Do Today 2020
11/08/2020 17:22:12

See this one on

"Sehr schöne dekorative antike Uhrmacher Drehbank Messing auf einem Holzsockel"

it could be its twin but with the rest,.

Thread: Assistance in identifying material composition of some wire
16/07/2020 23:18:44

Maybe a nickel alloy. Have a look at Espacenet patents search and put in Metcal and browse the results.

Thread: Nivellator
15/07/2020 22:38:41


patented by Otto Paul in 1926.

Thread: Another mystery tool
17/06/2020 19:19:31

How about using it to decide whether the upper surfaces of two plates/ or railway tracks are level before welding / tightening a joint?

Thread: Can summer car tyres be used in winter?
17/06/2020 10:29:33

In Germany people swap from summer to winter tyres end of October / early November. The winter tyres have a grippier profile and lots of little ribs like slits or vanes in the tread pattern which are supposed to pump more water as well. The ADAC (the German equivalent of the AA ) publishes tests on summer and winter tyres ( every year rating the tyres for grip, braking performance, noise and fuel economy.

I do so miss the daily commute, every November when we got the first dusting of snow you would find those who still had the summer tyres on creeping along in the slow lane. If you don´t have the appropriate tyres on there´s a fine and a point on your licence.

Thread: 3D CAD software - what do you use?
18/05/2020 18:26:12

Try TinkerCad. For creating simple solids and assembling blocks and putting holes in them to create an .stl file it does what I want for 3D printing.

Thread: Identify plastic glue
16/05/2020 15:32:20

A fish in the internet suggests the tank is made of polycarbonate. The dispenser shown on the web is is for a two component syringe with a static mixer nozzle attached.

Epoxy might do the job but you might never get it apart again.

I would have guessed it was a clear two component addition (platinum) curing RTV silicone. Shouldn´t attack the polycarbonate. Anything with a solvent in, is a no go. A clear sanitary silicone would probably do the job. Put a blob somewhere out of sight and see if you can get if off again.

However I had a look at this German site ( and it helpfully has the supplier details of what they are selling for the job. It turns out to be an electronics grade; unfilled, room temperature fast curing; two-component polyurethane adhesive is designed for the adhesion and potting electronics.


Thread: Cheese grater strip/band
12/05/2020 21:37:21

Try "perforiertes Blech" or Lochblech. (perforated sheet).

Thread: Ideal Extruder Temperature for PLA
06/05/2020 22:52:22

There are things (tower shapes with bridges) for this in Thingiverse, search calibration and pla. The problem is to get the printer to print different parts at different temperatures, so as far as I can see you have to import their g-code and run it, i.e. no stl and slicing. I run at 210°C and 65 °C bed.

Thread: Clarkson Autolock Mystery Tool
06/05/2020 16:22:50


Try pr = gb19690030371.

pr is priority.

06/05/2020 10:38:34

Searching patents is a bit of an art. Transposing application no.s, i.e. getting the application no. into the right format for Espacenet is tricky, older Japanese documents with emperor years as dates, US serial codes that cover several years. Espacenet will accept wildcards but you have to specify the field. Often it is a problem to pad out the number with the correct no of leading zeroes. You also have to know whether it is a priority or a straight application no. A good start point is to have a look at the publication data on the front page of a published application or patent and try and make sense of the various numbers and then try and find the document again using other tags (priority instead of application or publication no.)

05/05/2020 22:33:49

Patents were my old playground. US application no.s are trickier.

05/05/2020 22:11:26

From Espacenet

Bibliographic data: GB1335367 (A) ― 1973-10-24


Page bookmark GB1335367 (A) - CHUCKS
- international: B23B31/20; (IPC1-7): B23B31/04
- cooperative:
Application number: GBD1335367 19690616
Priority number(s): GB19690030371 19690616

Abstract of GB1335367 (A)

First page clipping of GB1335367 (A)

1335367 Chucks CLARKSON INTERNATIONAL TOOLS Ltd 14 Sept 1970 [16 June 1969] 30371/69 Heading B3B A tool-holding chuck includes a tool-locating part 26 slidably mounted in the chuck body to control the axial position of the tool, a rotatable adjusting ring 34 in screw-threaded engagement with the tool-locating part, and means, such as apertures for reception of a suitable tool, on the adjusting ring accessible through an opening 18 in the body for rotating the ring to control the axial position of the tool-locating part. The adjusting ring carries suitable graduations visible through the opening 18. A rear surface of ring 34 abuts a shoulder 17 in the body. A head portion 25 of tool-locating part 26 is held against rotation by engagement of a slot therein about a screw 19. The head has a conical stop 27 which engages a depression in the tool shank 23. The latter is gripped by a split collet 22 which is tightened by axial movement of a sleeve 21 due to rotation of a nut 11. Alternatively, a nut (38) (Fig. 4, not shown) with a bevelled portion, engages the collet (40) directly. The chuck is self-tightening.

Thread: New member in Switzerland
04/05/2020 21:55:25

Gruetzi aus Bayern.

Thread: Can you identify this gas torch?
20/04/2020 22:20:28

Mains gas /air I would think. The valves are nice and fall naturally under your index finger and thumb to switch between melting/burning off, keeping warm to blow and annealing the finished piece. Maybe it predates natural gas. The other usual one was a bunsen type with a heavy stand and the burner angled up at about 45 deg. The one you have was more for working on (glass) vac lines in situ or burning off and sealing a vial of something from a vacuum line.

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