Rlc switches

Resistor, Capacitor & Inductor selector switches
knoba - Rlc switches

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1p12t rotary switches, dupont clone connectors for breadboarding
knoba - Rlc switches

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Link to cad file below
knoba - Rlc switches

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knoba – Rlc switches – Facia – 2017.dxf

knoba – Electronics workbench

knoba – Breadboard Patch-leads & Peripherals

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Ac Power Supply

Aluminium frame pattern for recycled multitap transformer
knoba - Ac Power Supply

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Transformer core shaping buck
knoba - Ac Power Supply

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Frame made
knoba - Ac Power Supply

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knoba - Ac Power Supply

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Donor psu…
knoba - Ac Power Supply

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Ac system internals in
knoba - Ac Power Supply

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240vac @ 50Hz in: 1, 3, 6, 9 & 12vac @ 50Hz out
knoba - Ac Power Supply

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Illuminated the meter.
knoba - Ac Power Supply

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New laminated fascia (cad file below)
knoba - Ac Power Supply

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New laminated meter scale (cad file below)
knoba - Ac Power Supply

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Schematics (Fritzing file below)
knoba - Ac Power Supply

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knoba – Ac Power Supply – Fascia – 2016.dxf

knoba – Ac Power Supply – Meter Scale – 2016.dxf

knoba – Ac Power Supply – Schematic – 2016.fzz

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Test lead rack

Copper, brass, stainless, aluminium. It rotates.
knoba - Test Lead Rack

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Aluminium top tray & forming buck
knoba - Test Lead Rack

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Buck formed. Aluminium top tray formed
knoba - Test Lead Rack

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Brass upper rack and shaping forms
knoba - Test Lead Rack

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Complete assembly
knoba - Test Lead Rack

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Machined & beaten copper bolt, tray, turned copper spacer
knoba - Test Lead Rack

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Drive screws, machined & shaped brass rack piece
knoba - Test Lead Rack

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Machined aluminium wheel, copper spiky things, brass & stainless tynes, copper nut, m6 grub screw
knoba - Test Lead Rack

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Copper spiky things
knoba - Test Lead Rack

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Assembled
knoba - Test Lead Rack

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Upside down
knoba - Test Lead Rack

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Fitted to my electronics bench
knoba - Test Lead Rack

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Laden with sumptuous test leads
knoba - Test Lead Rack

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Tray carrying nik-naks & bits
knoba - Test Lead Rack

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Cad file below
knoba - Test Lead Rack

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knoba – Test Lead Rack – 2016.dxf

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Nogging master for arched wood roofs

Component parts overview…
knoba - Nogging master - 01

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2″ by 2″ softwood, M8 coachbolts.
knoba - Nogging master - 02

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Assembled.
knoba - Nogging master - 03

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Folds up.
knoba - Nogging master - 04

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Machined a nice thumb nut for it from aluminium.
knoba - Nogging master - 05

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Nogging master measuring dwang geometry…
knoba - Nogging master - 06

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Place on timber (3″ x 2″ here), mark & cut!
knoba - Nogging master - 07

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knoba - Nogging master - 08

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Notes.
• Perlins can be continuous or split form.
• Saves time.
• Eliminates waste, cost & mistakes.
• Inexpensive & easy to make.

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*** Mk2 incorporates the “Plate Pilot” for accurate ‘birds mouths’ on the wall plate / 1st perlins nogging.

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Knurling wheels

Using a single wheel knurler to copy and make knurling wheels from silver steel…
knoba - Knurling wheels

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Sawing off the wheels ready for facing and reaming
knoba - Knurling wheels

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Ready for hardening
knoba - Knurling wheels

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Cleaned up and waiting to be used…
knoba - Knurling wheels

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knoba - Knurling wheels

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knoba – Knurling copier profiler

West Yorkshire Steel – Silver steel.pdf

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Hss indexable metal scraper

Originaly a ‘Moore& wright’ high carbon steel metal scraper…
knoba - hss indexable metal scraper-

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It now accepts high speed steel pieces from a parting off blade…
knoba - hss indexable metal scraper-

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Shank had to be; removed, annealed and then machined (M4)…
knoba - hss indexable metal scraper-

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knoba - hss indexable metal scraper-

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knoba - hss indexable metal scraper-

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knoba - hss indexable metal scraper-

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RDG tools – Parting Blades

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Concrete post finials

Finished finial for these 4″ concrete posts…
knoba - concrete post finials

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Metal brackets (the 3 shown in centre of picture) allow the finials to slide on
knoba - concrete post finials

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Countersunk to accept screws into the wood on top
knoba - concrete post finials

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Body was made more durable by gluing the wood perpendicular to each other
knoba - concrete post finials

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B&Q – Wooden Post Cap

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