Workshop extractor

Intake side. Made from aluminium.
knoba - Workshop extractor

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Exhaust side. Enclosure made from 304 stainless steel, plywood & galv weldmesh.
knoba - Workshop extractor

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240v Torin Sifan extractor, centrifugal fan. Fabricated wall interface.
knoba - Workshop extractor

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3 developments. Mallet formed. Pop riveted & silicon seams. Cad file below.
knoba - Workshop extractor

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Removable grill made from plywood & weldmesh.
knoba - Workshop extractor

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Hardwood former (1st) used for hammer forming intake cowling
knoba - Workshop extractor

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Hardwood former (2nd) used for hammer forming intake cowling
knoba - Workshop extractor

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Hardwood former (3rd) used for hammer forming intake cowling
knoba - Workshop extractor

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First phase complete. To do: trim edges & fold over returns…
knoba - Workshop extractor

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Softwood former (4th) used for hammer forming edges of intake cowling
knoba - Workshop extractor

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Needed to make a tucking fork for this operation
knoba - Workshop extractor

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Front side.
knoba - Workshop extractor

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Back side.
knoba - Workshop extractor

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Power. Extractor is quiet & very powerful.
knoba - Workshop extractor

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Materials:
(FAN)
1 x Extractor fan
1 x Wall interface plate (1.5mm galvanised sheet)
1/8" pop rivets
Rawlplugs
6 x 12x2" stainless steel self tapers
6 x m8 stainless steel washers

(ENCLOSURE)
1 x 4'x4'x1.0mm 304 stainless steel sheet
1/8" pop rivets
Silicone sealant
1/2" closed cell foam sound insulation
High temp spray glue
10mm mild steel bar
2 x m6 stainless steel button cap bolts
2 x m6 stainless steel washers
Plywood
Weldmesh

(INTAKE)
2.0mm 6 series aluminium sheet
Grab adhesive

(ELECTRICAL)
240v metal clad switched outlet with light (5Amp fuse)
Metal clad surface mount backbox
22mm (7/8") through hole rubber grommets
1.0mm twin & earth cable
Rawl plugs
Screws
Earth sleeving
Trunking
Cable ties

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Torin-sifan – Ddn200-180a Extractor

Sassda – Stainless Steel

Rivetwise – Pop (blind) rivets

MK Electric – Commercial / domestic

Thor – Hammers & mallets

knoba – workshop extractor – 2017.dxf

knoba – Metalwork mallets

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http://www.homemadetools.net

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Spool winder unwinder

Takes many sized spools
knoba - spool winder unwinder

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knoba - spool winder unwinder

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knoba - spool winder unwinder

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Wire holder & hex key holder
knoba - spool winder unwinder

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Adjustable friction clutch
knoba - spool winder unwinder

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What’s in the CAD file…
knoba - spool winder unwinder

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Materials:
1 x 142x100x6 mm (5 5/8"x4"x1/4") plate/sheet mild steel
2 x 50x80x3 mm (2"x3 1/8"x1/8") plate/sheet mild steel
4 x m5x12 mm (3/16"x1/2") socket head bzp machine screws
4 x 12mm (1/2") o/d rubber stick on feet
2 x 25x30 mm (1"x1 1/4") nylon 6-6
3 x M6 (1/4") stainless steel penny washers
1 x M6 (1/4") felt, penny washer size
1 x M6 (1/4") conical spring
1 x M6 (1/4") thumb wheel
2 x M4 (3/16") grub screws
1 x M6 (1/4") circlip, or e-clip, or any other axial load shaft retainer
1 x 250x6 mm (10"x1/4") stainless steel bar
Some paint
& a handle (wood, metal, I used beads for jewellery)

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knoba – spool winder unwinder – 2018.dxf

knoba – thunb wheel jig

Rapid electronics – stick on rubber feet

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Bobbin sander mods

Table inserts to replace the plastic ones (hole between sandpaper & table)
knoba - bobbin sander mods

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Machined table inserts (made with holesaws & angle grinder), from plate
knoba - bobbin sander mods

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Pickling overnight in sulphuric acid to remove mill-scale from hot-rolled steel
knoba - bobbin sander mods

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The drop on this aperture is 3.5mm, my plate (same as the plastic inserts) is 3mm…
knoba - bobbin sander mods

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After pickling they are desmutted with detergent & a pan scourer
knoba - bobbin sander mods

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What’s in the CAD file
knoba - bobbin sander mods

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Printed 1:1, they make great stick on templates for more machining
knoba - bobbin sander mods

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Making a shim to fit into the aperture
knoba - bobbin sander mods

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Welding magnets placed on top
knoba - bobbin sander mods

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Thin bead of silicon sealer
knoba - bobbin sander mods

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Drop in shim
knoba - bobbin sander mods

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Drop in large table insert
knoba - bobbin sander mods

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Place magnets over hole & leave for 48 hours
knoba - bobbin sander mods

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Templates stuck, centre punched, pilot drilled & cleaned
knoba - bobbin sander mods

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Increased hole size to 6mm (1/4″) and countersunk both sides
knoba - bobbin sander mods

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Perfect. No more misaligned levels when sanding.
knoba - bobbin sander mods

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Was going to install small magnets but the inserts are fine
knoba - bobbin sander mods

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Added a basket for the bits & pieces.
knoba - bobbin sander mods

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Materials:
6 x 100x100x3 mm (4"x4"x1/8") plate/sheet mild steel
1 x 100x100x0.25 mm (4"x4"x0.010") shim mild steel
Silicon sealer

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Triton tools – Bobbin sander Tsps-450

knoba – bobbin sander mods – 2018.dxf

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3in1 metal working machine extras

Acquired a bare 3in1 metalwork machine (bends, cuts, rolls).
knoba - Rlc switches

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Machine needed a sturdy base.
knoba - Rlc switches

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Detail in the CAD file below
knoba - Rlc switches

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Chassis finished.
knoba - Rlc switches

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Made a shelf to catch cut sheet from perforated aluminium.
knoba - Rlc switches

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Shelf being trialled.
knoba - Rlc switches

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knoba - Rlc switches

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Machine on base.
knoba - Rlc switches

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I make tool socks for my equipment.
knoba - Rlc switches

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Elastic stitch, eyelet, nylon cord and plastic holder thing.
knoba - Rlc switches

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Keeps tooling with the machine for adjustment / maintenance.
knoba - Rlc switches

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I also make covers for my equipment. Poly cotton.
knoba - Rlc switches

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Detail in the CAD file below
knoba - Rlc switches

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Identical scales on both slip roll adjusters. Machined from ally.
knoba - Rlc switches

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Stamped & levelled thread bottoms so both top settings match.
knoba - Rlc switches

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Added a fence carrier to keep it with the machine.
knoba - Rlc switches

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Ready for work, or storage.
knoba - Rlc switches

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Materials:
1.5m x 50mm x 6mm f/s
6.0m x 50mm x 3mm shs
1m x 2mm x 12mm i/d chs
4 x castors
4 x M10 Bolts x 50mm
12 x M12 Bolts x 70mm
4 x M10 Washers
12 x M12 Washers
4 x M10 Square Weldnuts
12 x M12 Hex Weldnuts
8 x 50mm x 50mm Black Square Plastic End Caps
Paint, Direct to metal, light blue
Polycotton 2m x 1.1m 
Polyester Thread
2.5m Ball chain

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Clarke – SBR760 3 in 1 Sheet Metal Machine

knoba – 3in1 metal working machine stand – 2017.dxf

knoba – 3in1 metal working machine cover – 2017.dxf

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Lab tripod

Made from 304 stainless steel.
knoba - lab tripod

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knoba - lab tripod

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It disassembles when not required. The tig’ed nuts are clearance drilled.
knoba - lab tripod

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Silicon feet good to approx. 200°c.
knoba - lab tripod

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In action.
knoba - lab tripod

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CAD file link below.
knoba - lab tripod

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knoba – lab tripod – 2017.dxf

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Jewellers bench plate

Plate is 5mm x 200mm, spot welded clamp bracket is 2.2mm, mild steel.
knoba - jewellers bench plate - 01

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Clamp is 6mm x 25mm, m8 threaded bar, turned piece on end
knoba - jewellers bench plate - 02

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Finish is sulphuric acid pickling & satin black cellulose
knoba - jewellers bench plate - 03

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Good stability, very solid.
knoba - jewellers bench plate - 04

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knoba – Jewellers Bench – 2016.dxf (CAD file link below)
knoba - jewellers bench plate

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knoba – Jewellers Bench – 2016.dxf

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Interior van handles

Van tidy-up; out with the old…
knoba - vandles

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200mm x 25mm x 6mm 304 stainless steel ‘vandles’.
knoba - vandles

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200mm x 25mm x 6mm 304 stainless steel ‘vandles’.
knoba - vandles

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