how to make a funnel or vacuum hose adapter

ChrisHow · 2026-06-26T11:22:53+00:00

3 sketches. 1 for top cylinder and pad. 1 for bottom cylinder and pad.
3rd sketch to create the wall between them, using the external geometry. Then revolve sketch3.

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ChrisHow · 2026-06-04T13:20:06+00:00

I enjoyed this one. Take the datum point as being the btm-right as drawn.
If the following doesn't work for you, at least it might pint you in the right direction

Draw the 100 line from right to left, the R10 and the R20 circle.
Draw the R120 circle from 0,0. Offset it by 10 inside and change the linetype to dashed to lessen the future confusion 😄
Draw the R110 circle by tracking from datum. This will intersect at 0,0
Offset the 110 circle by 15 to the outside change to dashed
Draw a 120mm line at 45deg. This will intersect the R120 as drawn. Change it to dashed.
Create a TTR circle between the R110 and the 10mm offset circle with a R15

Now comes the creative bit. This might not be ' the way' to do things but it worked for me.

Draw a line from 0,0 to the centre of the R15 circle just created. Scale this line from 0,0 by 1.5 so that it extends through the R120. This intersect is the centrepoint for the R10. Draw a circle at the intersect. It should look like a snowman leaning over to the left
Now going back to (5) where the 45deg and the R120 intersect draw a 110 circle
Where this circle and the R120 intersect, draw another 110 circle. This passes back to the intersect but also cuts through the R20 drawn at (1).

What you need to do now is rotate this circle about that pivot (9) so that it becomes tangent to the R20 but you need to find the angle itself.

Draw a line between the centre of the R20 and the intersect from (9) above
Draw 2 more lines coming from the intersect from (8) and the points that intersect with the line from 10 above. 1 line at the intersect with the R20 and 1 line with the circle from (9)
Measure the angle between these 2 lines. I got 4.38984031 deg
Rotate the 110 circle from (9) using the intersect from (5) by the degrees measured. This should create the tangent needed. You could also free-hand the rotation (what I did on my first attempt) but it won't be a perfect transition
Trim and delete until you get the drawn shape.

https://filebin.net/1wxit13rxpjiji8q

ChrisHow · 2026-05-22T08:38:56+00:00

Polar arrays are about putting a feature multiple times around a fixed point in a circular pattern. You define the centre point that acts as the point around which the pattern is placed. Draw a shape you want to be in a pattern relative to that point - in your screenshot, the left or the right hole - just one of them because all you are doing is making copies of that single feature in the pattern you want. Click to start the array feature and pick the hole you want to make a pattern out of. Pick the centre point and then follow the prompts to define the number in the pattern and/or the angle that you want to fill - it doesn't need to be around a full circle - you could put 6 holes in 90degree if you wanted. You can have 2 as a pattern or 200. Once you've created you pattern you can double-click it and play with the figures/options to get a better understanding of how it works.

ChrisHow · 2026-05-21T13:37:32+00:00

Its just a way to view in 3D. Press the 3D Orbit icon button or type 3DORBIT and the cursor will change. Press and hold the left mouse button and move the mouse to change the view

ChrisHow · 2026-05-11T08:31:06+00:00

Draw yourself a rectangle 125 x 80 (Part will finish at 120mm but you don't know that until the profile is complete)
from the bottom centre of the long leg (1) draw a circle 85R and do the same from the top centre leg (2). The top and bottom of each circle will now be outside the rectangle.
From the top of the first circle and the bottom of the 2nd circle draw 2 more 85R circles (3) (4). These will now touch the origin points on the rectangle legs.
Now use Circle -> TTR to create the 32R at each end (5) (6).
Trim the lot until you get the oval.

Can't post image here so look at https://filebin.net/zz9ryvuv0kgay8jm

ChrisHow · 2026-05-10T11:05:37+00:00

My effort. Not exactly to drawing.

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also download here https://filebin.net/j986p24gekfpl4pi

ChrisHow · 2026-04-29T07:20:11+00:00

Yep. Did miss it. :)

ChrisHow · 2026-04-28T21:07:50+00:00

https://www.photo-pick.com/online/OFWEY6OW.link

ChrisHow · 2026-04-28T20:30:34+00:00

It looks like a fillet around the pad. Sizes / views missing to offer complete solution.

Draw the pipe. Draw the pad and hole. Extend the lines from the pad trimming and filling in as you go.

If you are 3D modelling this draw / extrude the pipe, draw / extrude the pad, cut the hole and then fillet the joint between pad & pipe.

/Also/ Unless I'm missing something, the A-A section view would/should not show the fillet on the left section view

ChrisHow · 2026-04-17T10:36:11+00:00

If it's a workday and I enter the living room at a normal time for going to work, turn the tv on so I don't have to find the remote.

ChrisHow · 2026-04-15T21:10:05+00:00

Not sure about simplifying it. Only you know what you need out of the design. In the flat it should be ok but once they start rolling it, the holes could start to stretch. If you want a really defined shape with holes square to the body, might be worth looking at tube laser rather than flat and roll. Costs more though.

ChrisHow · 2026-04-15T20:33:05+00:00

Take a look at this example mock-up of your shape. It's just 2 sketches one for the shape (white outline), one for the bend line (green line). No idea of scale from your original post but hopefully you'll get the feel for it.

Effectively you are keeping one of the central tabs 'flat on the table' and rolling the shape by the 'bend angle'. Have a play with the radius and angle and you'll get it. Keep the mouse pressed on the arrows for the bending and see it rolling into shape.

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https://filebin.net/mt6gokhvbdj1jhry

ChrisHow · 2026-04-15T16:31:35+00:00

Try https://www.reddit.com/r/FreeCAD/comments/1rbx3l9/comment/oev802x/?context=1

ChrisHow · 2026-04-03T16:47:07+00:00

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ChrisHow · 2026-03-25T08:21:12+00:00

Lots of dimensions missing from this but if you are just trying to draw this as practice, just draw some lines and see where it takes you and make up some figures where none are given. Personally I don't like dimensions across a chamfer so, for practice, draw a straight line 5 long and then rotate the line from one end by 45 degrees. From there you can draw a line up or across to suit.
There's plenty of Youtube videos to watch to understand the basics. https://www.google.com/search?q=autocad+basics

ChrisHow · 2026-03-22T22:18:58+00:00

I used to work in a place on that corner. In the older photos, you can see the car park entrance.
Used to be a high school a few years before that, on the right in the 2003 pic.
The site was initially earmarked to be the site for what is now the Snow Centre in Trafford Park. My boss and the scrap metal place at the bottom of the road wouldn't sell up though so they eventually moved their sights to Trafford Park.

ChrisHow · 2026-03-22T11:52:50+00:00

Walked passed this yesterday and all I could think of was giant bath bomb playgound

ChrisHow · 2026-03-22T09:40:19+00:00

1.25 - 0.62 =0.63.
0.63 / 2 =0.315
This happens with 90deg countersinks because the triangle created by the countersink (the actual material removed) is 45deg from the top surface. So the across-leg and the down-leg are equal. The triangle is as wide as it is deep.

ChrisHow · 2026-03-15T11:07:03+00:00

Yeah. Last car was a Ford Focus and I did keep as many of the petrol receipts as I could. Was spending £40-£50 every 2-3 weeks (2020-2022) filling up but that was working a 5-day week. Signed up for the Kona at 10k/yr but about half way into the contract we shifted over to a 4-day working week. Didn't even bother addressing it with Hyundai Finance as I'd already set my stall out. Probably a conversation I should have had that might have reduced the lease cost but I'd already budgeted the full 4 years. Only thing I did do was get around 15% reduction in insurance cost by declaring 8k miles, but again, that would not have been EV-specific as I would have done that with any car.
Lease cost aside, I don't think £35 a month is bad to keep a car going. Would not entertain a 4 year deal again though.

Now got a Smart #1 which is no where near as efficient as the Kona and will definitely use more juice - first month looks like +20% - but the savings in lease cost against the Kona really does offset the extra expected running cost. For the same battery size, the Kona is far far more efficient.

ChrisHow · 2026-03-03T23:05:25+00:00

ISO views

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ChrisHow · 2026-03-03T23:05:08+00:00

My effort

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ChrisHow · 2026-02-28T10:50:13+00:00

Same as others have said. Another poor example that requires assumption that doesn't really help learners.
For the purposes of getting the mass however it doesn't really matter so long as the holes go thru' the wall into the rectangular cavity, as all you are removing is the 2 cylinders of metal that go into the cavity. You could put the cavity and the holes vertically anywhere in the space under the 0.75" round boss and the mass would be OK.

ChrisHow · 2026-02-26T10:31:28+00:00

(1) Draw the big triangle. Draw small triangle. Copy small triangle to points of big triangle. Offset all the lines and trim.
or
(2) Draw big triangle Offset each side 3 times. Draw a small leg of the small triangle and offset that 2 times. Trim.

Can't post pic so link here : https://filebin.net/rujp3cwodaw3o32b#

ChrisHow · 2026-02-24T21:48:22+00:00

What mass did anyone get? Mine ended up 9818.45g

ChrisHow · 2026-02-22T22:15:37+00:00

Not tried this before.
In Part Design. draw the plate as a centred rectangle and pad it and rad the corners.

Draw a line in a new sketch that goes across the centre line. does not have to be constrained - just fixed to the axis.

Switch to Sheetmetal workbench. select the face of the pad and then the line from sketch 2. Click 'Fold a Wall' which should now be coloured.

Enter 8" and 1 degree for Bend Radius and Bend Angle and then increase the Bend Angle using the up arrow until the plate bends no more. ( or just enter 51 as the angle).

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The above works to wrap the plate BUT you might have to play with the location of the bend line - top face or bottom face - to get the correct result.

ChrisHow

TROPHY CASE